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  • Cane Creek eeSilk Stem Review: High Performing, But Is Lockout Really Necessary?

    Cane Creek eeSilk Stem Review: High Performing, But Is Lockout Really Necessary?

    The Cane Creek eeSilk stem is a fresh take on a proven design. It offers greater comfort than a regular stem on rough terrain, while a lockout switch lets you firm it up for smoother tarmac sections.

    In this review, we’ll inspect the details of the eeSilk CS suspension stem, what it’s like to live with, and how it rides. I’ll then strap my vibration-measuring equipment onto it to find out how its comfort compares to two similar suspension stems: the USE VYBE and Redshift ShockStop.

    Let’s check it out.

    The Cane Creek eeSilk Stem

    The eeSilk ranks among the top-performing suspension stems, delivering noticeable comfort gains on long rides.

    US $229 (MSRP)

    VIEW AT AMAZON

    The eeSilk is a single-pivot, elastomer-based suspension stem. With 20 mm of travel at the brake hoods, it’s designed to take the edge off vibration and repetitive chatter. Think of this as a comfort upgrade rather than a true suspension system.

    There are two versions of the eeSilk. The eeSilk SL is the simpler option, functioning like a typical suspension stem. The model I’m testing, the eeSilk CS, adds a small switch that lets you adjust compliance on the fly. You can set it to “firm” for smooth tarmac, or “soft” for gravel and cobbles. The switch is easy to use, though it’s best not to adjust it while putting weight through the bars.

    Weight is in line with other suspension stems. Depending on the version and length, it comes in at around 230 grams. That’s just 80 grams more than a high-end rigid stem. Interestingly, pricing varies by size, with the 90 mm version I tested retailing for US $229.

    An optional out-front computer mount is available that connects to the stem face plate. It’s angle-adjustable and includes the components to fit both Garmin and Wahoo computers. There’s also an optional extra part that will allow you to attach a light or camera underneath it. It’s worth noting that this computer mount kit is also directly compatible with the Redshift stem, and many people prefer it over the computer mount that Redshift offers.

    The eeSilk is available in a single steerer size (1 1/8″), bar diameter size (31.8 mm), and stem angle (-6°). If you’re after a higher front end, you’ll need to pair it with a riser drop bar. It comes in lengths ranging from 70 mm to 100 mm, in 10 mm increments.

    Elastomer Tuning

    One of the best features of the Cane Creek eeSilk stem is its simple and easy tunability. It comes with three interchangeable elastomers of varying stiffness, letting you fine-tune how much compliance the stem provides. If you can’t find what you like, two additional elastomers are also available from Cane Creek.

    Lighter riders or those riding less aggressively will generally prefer the softer elastomers, while heavier riders or those pushing their bike harder will benefit from the harder options.

    Swapping the elastomers is quick and straightforward:

    1. Loosen and remove the retaining bolt
    2. Slide out the existing elastomer
    3. Insert the new elastomer
    4. Reinstall the bolt and tighten it to the recommended torque

    The whole process takes just a few minutes and, unlike some designs from Redshift or USE, there’s no need to remove the handlebars. That makes dialling in the ideal spring rate much faster and less of a hassle, as you can swap elastomers between test rides without repeatedly taking your cockpit apart.

    Design and Aesthetics

    The Cane Creek eeSilk stem is clearly a very well-constructed product. It’s made of forged aluminium, then it’s polished and anodised with a glossy black finish. The edges are smooth, and the overall look is quite refined.

    That said, I find the exposed elastomer and visible pivot create a busier appearance than other suspension stem designs, such as the USE VYBE. There’s also extra bulk around the steerer, and the compliance switch makes it immediately clear this is no ordinary component.

    One of the more unusual aspects is the externally-mounted elastomer. This makes swaps incredibly easy, but it also leaves small gaps where dirt, sand, and mud could potentially work their way inside. According to Cane Creek, this isn’t an issue in normal use, and replacement parts are easy to source if anything does wear over time.

    Even so, it’s probably wise to occasionally remove the elastomer and clean the internal areas from time to time as a bit of preventative maintenance.

    From a performance perspective, the layout makes a lot of sense. The elastomer sits low and close to the pivot, giving it strong leverage over the elastomer. I believe this design advantage shows up in the vibration test results below.

    Compliance Switch

    The compliance switch (CS) is what really sets the eeSilk apart from other suspension stems.

    You can run the stem in “soft” mode, with the full 20 mm of travel available, or switch it to “firm,” which significantly reduces the amount of movement. Even in the firm setting, it’s not completely rigid. There’s still a small amount of give, though you’ll mostly only notice it when pulling hard on the bars, such as during a sprint.

    I also experimented with positioning the switch halfway between the two modes, but in use, the knob tends to drift toward one of the extremes while riding.

    One tuning trick I’ve seen is to install a softer elastomer than you’d normally use, then keep the compliance switch in the “firm” position for most riding. This effectively gives you access to “medium” and “extra-soft” settings, rather than the usual “firm” and “soft”.

    Personally, I was happy running mine in the “soft” setting for the majority of my riding.

    Ride Characteristics

    The Cane Creek eeSilk stem performs particularly well on fast gravel roads. With its large elastomer positioned low and close to the pivot, it delivers a very smooth movement and a clear reduction in vibration.

    Bike handling remains sharp in typical gravel riding conditions. There’s still a sense of being connected with the road, steering feels predictable, and there is no noticeable flex in the pivot.

    It’s only when the terrain gets especially rough that precision starts to fade, as the stem becomes overwhelmed by constant impacts and begins to bounce more. But that’s really outside its intended use. This is where a suspension fork makes more sense than a suspension stem.

    Like other single-pivot designs, there’s a slight amount of handlebar dive under compression (seen in the gif above). The bars move subtly downward when loaded. It’s not dramatic, but you’ll want to tilt your brake levers upward to compensate. Try to make it so that your hoods are where you like them at the sag point.

    When pulling up on the bars, you can both feel and hear the suspension topping out slightly. This is typical for single-pivot stems. Redshift ShockStop stems behave similarly. It’s simply a reminder that the system is active, rather than disappearing beneath you. Designs from USE or Vecnum cut top-out entirely by using a secondary elastomer to smooth out that sensation.

    The big drawcard compared to other stems is the Compliance Switch. While I found it does work as intended, I rarely found myself using it. Perhaps that’s down to my familiarity with other suspension stems. The total travel is only 20 mm, so the few millimetres of movement on a smooth surface were of no concern to me.

    It’s now time to move on to my vibration tests.

    Test Bike and Comfort Test Method

    cane creek eesilk stem

    I conducted this vibration test using my Mondraker Dusty gravel bike, fitted with a carbon fork and Lauf Smoothie 44 cm wide carbon handlebars.

    The bike was running Bontrager Girona Pro 42 mm tyres (41 mm measured) on Spank Flare 24 Vibrocore wheels. Tyre pressures were set to 34.5 PSI at the rear and 33 PSI up front, based on the Silca tyre pressure calculator. These pressure values are what I typically use for my 87 kg body weight on gravel roads.

    For the test, I compared four stem setups: a standard rigid stem, the Cane Creek eeSilk suspension stem, the USE VYBE suspension stem, and the Redshift ShockStop suspension stem. Each stem was 90 mm in length, fitted to the same bike, and tested under identical conditions. The spring rates were also tuned to suit my weight and riding style.

    I then performed a high-frequency bump test over a controlled obstacle at 25 km/h, designed to replicate the repeated impacts you’d encounter on a rough gravel road.

    You can read more about my vibration measurement procedure HERE.

    Vibration Test Results

    StemAverage Acceleration (G)Vibration Reduction Compared To Rigid Stem
    USE VYBE Suspension Stem1.5516.2% Less Vibration
    Cane Creek eeSilk Suspension Stem1.679.7% Less Vibration
    Redshift ShockStop Suspension Stem1.736.5% Less Vibration
    Alloy Rigid Stem1.85–

    In my lab test simulating fast, repetitive bumps, the Cane Creek eeSilk stem performed very well. If you’re coming from a rigid stem, you can expect roughly a 10% reduction in vibration at the handlebars on a gravel bike.

    Against its competitors, the eeSilk damped about 3.5% more vibration than the Redshift ShockStop, which is the most popular suspension stem out there. However, it didn’t quite match the top performer, the USE VYBE.

    The VYBE reduced vibration by an additional 7.2% compared to the eeSilk, largely due to its dual-elastomer design. By using both a top and bottom elastomer, it does a better job of controlling top-out, whereas most other suspension stems rely on a single elastomer.

    Even so, it’s a strong result for the eeSilk and firmly places it among the better-performing options available.

    How Does It Compare?

    The Cane Creek eeSilk CS is a very good suspension stem overall. Its biggest advantage is how easy it is to swap elastomers; it’s significantly quicker than other single-pivot designs. The Compliance Switch is also a nice touch for riders who split their time between smooth tarmac and rougher surfaces, and the gravel performance is genuinely impressive.

    That said, the USE VYBE has the edge in several areas. It’s lighter, delivers better vibration damping over fast, repetitive bumps, and offers preload adjustment for more precise tuning. Purely in terms of ride feel, it’s the best in this category.

    The Redshift ShockStop suspension stem shouldn’t be overlooked either. It’s available in a much wider range of lengths (55–120 mm), making it easier to dial in your fit. It’s also typically over 20% cheaper, is available for 1 1/4″ steerer sizes, and offers a broader selection of elastomers for fine-tuning the feel.

    On top of that, the Redshift can be run in either a positive or negative orientation to better match your handlebar height preferences. There are even two 30° tall-rise options available.

    Summary

    Overall, the Cane Creek eeSilk stem ranks among the top-performing models, delivering great comfort gains on long rides. With the right elastomer installed, it proves to be a highly effective upgrade for reducing fatigue.

    The best features on offer are the easy elastomer swaps and the Compliance Switch. That said, while the switch works as intended, I found myself leaving the stem on “soft” most of the time. That likely comes down to my familiarity with suspension stems and the fact that I don’t often ride roads that call for a “firm” setting.

    If I were choosing a stem again, I’d likely go for the SL version instead of the CS. It has a cleaner look, weighs a bit less, and comes with a lower price tag.

    Speaking of cost, I know the eeSilk isn’t exactly inexpensive, but compared to a suspension fork, it’s relatively affordable. So, if you’re chasing extra comfort on a drop-bar bike, it’s definitely worth considering.

    You can support the CYCLINGABOUT Comfort Lab by purchasing a Cane Creek eeSilk stem on Amazon. Simply click HERE to make your purchase, and a small commission will come our way.

  • The 6 Best Suspension Stems For Game-Changing Comfort On Your Bike

    The 6 Best Suspension Stems For Game-Changing Comfort On Your Bike

    Suspension stems might seem like just another cycling gimmick, but vibration test data from our cycling comfort lab shows that the best suspension stems are highly effective at smoothing out bumps, potholes, and rough roads.

    Not only are suspension stems comfortable, but they are also lightweight, reliable, and able to be installed on almost any bike. I’ve even found these stems to be hugely beneficial on bicycles with very wide tyres.

    In this article, we will examine the advantages and disadvantages of suspension stems. I will then explain the different spring and linkage designs, and finally, I’ll tell you about the best products available. I’ll be lumping the Specialized Future Shock into this article too, as it functions similarly.

    Let’s start with the advantages of suspension stems when compared to rigid stems.

    Note: This article was originally published in January 2024, but has been updated in July 2025.

    Suspension Stem Advantages (Compared to Rigid Stems)

    best suspension stems

    Vibrations coming up from the road dissipate in your body, causing fatigue. This manifests as discomfort, including muscle soreness, hand numbness, and neck and shoulder pain.

    A suspension stem increases your comfort by removing a significant portion of these vibrations. Our tests with an accelerometer show a vibration reduction of up to 30% over a rigid stem. Keep in mind that vibration exposure is greater on longer rides, so the more time you spend on your bike, the more comfort you have to gain.

    Suspension stems also reduce the impact force on your hands. This means you don’t need to grip your bars as tightly over bumps, allowing for more effortless braking and control.

    These stems might even make your bike faster. This is because the stem can absorb more of a bump, minimising your upper body movement.

    A great thing about suspension stems is that they can fit all bikes. You can simply remove your rigid stem and swap one in.

    Ok, let’s now look at the advantages suspension stems have over suspension forks.

    Suspension Stem Advantages (Compared to Suspension Forks)

    best suspension stems

    Suspension stems are often better than forks at absorbing the high-frequency vibration that you experience on fast gravel roads. This is because they require very little damping, which allows them to move virtually uninhibited over fast, repetitive bumps.

    They also require virtually no maintenance, and their performance doesn’t deteriorate over time. In comparison, more complex suspension forks require regular servicing to ensure they function well.

    Suspension stems are lightweight too, typically adding just 100 or 200 grams to a rigid bike, whereas a suspension fork often adds a full kilogram (2.2lb).

    At US $100 to $300, suspension stems are a relatively cheap upgrade. Consider that good suspension forks start at US $400 and max out at over $1500!

    There is also no measurable loss in power transfer when you accelerate. In comparison, suspension forks are stimulated on every pedal stroke, losing energy from the system.

    These stems are a notably aerodynamic way to achieve suspension on a bicycle. Round suspension fork legs simply don’t slice through the air as effectively as a bladed rigid fork.

    And lastly, swapping out a stem is much quicker than changing a fork. This is a useful advantage if you only need suspension on your bike very occasionally.

    With the advantages all laid out, suspension stems are looking pretty great. So, what are the downsides?

    Suspension Stem Disadvantages (Compared To Rigid Stems)

    best suspension stems

    Most suspension stems bob up and down a bit while you ride. But given the 10 to 20mm range of motion, it’s not usually a big deal.

    It’s worth noting that suspension stems activate much less than you’d think while sprinting, as you tend to pull up and push down on the bars at the same time.

    Suspension stems are not available in super short lengths. This is a packaging issue – the pivot must be between the steerer and the handlebar. Currently, the shortest stems available are 70mm long.

    And lastly, suspension stems are not exactly elegant, especially the highest-performing models. But I suspect those who are sensitive to bike aesthetics are probably not reading this article.

    Let’s now discuss the disadvantages when compared to a suspension fork.

    Suspension Stem Disadvantages (Compared to Suspension Forks)

    Over rough terrain, a suspension stem does not offer the same level of grip or bike stability as a suspension fork.

    This is because they use much less advanced dampers, they have much less tunability, and they only suspend your upper body (rather than the entire front of your bike). They also have significantly less suspension travel, which means they cannot absorb as much energy after a bigger impact.

    As a result, suspension stems are simply no match when it comes to off-road performance.

    Now that you understand the advantages and disadvantages of these stems, let’s get into the nitty gritty of their design.

    Suspension Stem Designs

    KOGA WorldTraveller Touring Bike

    Single pivot stems are the lightest, sleekest, and simplest design. These stems offer great performance, as the internal spring is usually very responsive, resulting in great vibration damping on fast gravel roads.

    There are a few downsides, however.

    Firstly, the amount of leverage you apply to the spring is different depending on where you place your hands. This means that while the stem might feel supple in the brake hoods, it might be too stiff once you’ve moved to the bar tops or drops.

    Secondly, the distance your hands are forward of the pivot point determines the suspension travel. This design quirk means that those with shorter stems miss out on some travel. It also means that single-pivot stems are best paired with drop bars, as your hands are far enough forward (at the brake hoods) to unlock the full suspension travel.

    Thirdly, these stems pivot in an arc, which results in your brake and shift levers tilting forward under compression. This characteristic feels a bit strange, but can be somewhat accounted for by tilting your handlebars up.

    And lastly, single-pivot stems don’t accommodate sweptback handlebars well. This is because your hands simply end up too close to the pivot point.

    A multi-pivot stem solves most of these issues. They require the same amount of force to activate them, no matter where you place your hands. In addition, all stem lengths offer the same amount of travel, the bar angle remains consistent under compression, and they all suit sweptback bars.

    The downside is that these stems have four bearings, which might develop small amounts of play long term. They also aren’t that pretty and add some weight.

    Let’s now look at the two different spring types.

    Spring Types

    Do you see the coil spring inside the Kinekt Suspension stem?

    First up, we have coil springs.

    According to our tests, these springs consistently offer the highest level of comfort because they move up and down almost uninhibited. This very effectively smoothens out the high-frequency chatter you experience on fast gravel roads.

    The downside to a very active spring is that it can feel ‘bouncy’ when you ride hard. It can also make your handlebars feel a bit disconnected from the ground below.

    The Redshift ShockStop has five interchangeable elastomers that provide a large range of spring stiffnesses.

    Elastomer springs are the other option.

    These springs have more material damping, which not only makes them less bouncy overall but also gives them a better feel. While they can’t match the high-frequency vibration damping of a coil spring, they are equally as good at absorbing bigger hits.

    A downside to elastomer springs is that they can firm up in below-freezing conditions. That said, this is not considered significant until it’s ridiculously cold – Redshift says that’s at -40F/-40C.

    Ok, you’re almost an expert on suspension stems now, so let’s take a close look at the best suspension stems available.

    I’m going to link through to some online stores below that will give CYCLINGABOUT a small commission on any sales. If you want to support this content, this is an excellent way to do so!

    Best Suspension Stems

    Kinekt Suspension Stem

    Linkage: Multi Pivot
    Spring Type: Coil
    Length: 90 to 120mm
    Min Weight: 470 g / 16.6 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    $189 AT AMAZON

    The Kinekt suspension stem is the most comfortable model we have tested in the Comfort Lab. It uses a fast-moving coil spring with 20mm of travel and employs a multi-pivot layout so that you get great performance no matter where you place your hands.

    While it’s a top performer, this stem can feel a bit bouncy and vague at times. It can also make a small knocking sound after it tops out after large impacts. As a result, this stem is usually best for those with an upright riding position or those who ride at a more relaxed pace.

    The Kinekt stem comes with three spring rates to adjust to your body weight, riding style, and terrain. It’s notably stiff torsionally and is available in an array of rises and lengths, including some super-tall models for those looking for a bit more bar height.

    Kinekt Suspension in 90-105-120mm with 7° angle:
    $189 at Amazon

    Kinekt Suspension in 100mm with a high 30° angle:
    $189 at Amazon

    Kinket Stem in 100mm with a very high 50° angle:
    $189 at Amazon

    Vecnum Freeqence Suspension Stem

    Linkage: Multi Pivot
    Spring Type: Elastomer
    Length: 90 to 120mm
    Min Weight: 287 g / 10.1 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    €299 AT VECNUM

    The Vecnum Freeqence suspension stem is another multi-pivot stem with 20mm of travel that appears similar to the Kinekt. There are a few key differences, however.

    The Freeqence uses an elastomer spring that not only has the best feel of any stem, but it isn’t ever bouncy! It also has 10mm of upward travel that eliminates ‘top out’ entirely. These characteristics allow the stem to instantly fade into the background while you ride.

    One of the greatest things about the Freeqence is that you can adjust the initial firmness and reactivity just by using an Allen key on the side. This is not quite an on-the-fly adjustment, but it’s close enough – no other stem provides this easy adjustability.

    The Freeqence is also 40% lighter than the Kinekt stems; however, this pursuit of lightness can be to its detriment should you ride with a flat handlebar, as it has noticeably less torsional stiffness. The stem is also rather expensive due to the extensive machining and titanium axles, and I’ve found it to be less active than I’d like over fast, repetitive bumps.

    Nonetheless, this stem has the least amount of compromises for my use, so this is what I’m currently using on my five-year bike journey around Africa.

    USE VYBE Suspension Stem

    Linkage: Single Pivot
    Spring Type: Elastomer
    Length: 70 to 90mm
    Min Weight: 205 g / 7.2 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    £180 AT USE

    The USE VYBE suspension stem is a single-pivot design, making it best suited to drop bar bikes where you can place your hands in the brake hoods.

    The USE VYBE has a unique internal design with two elastomer springs. The bottom spring provides material damping when the stem compresses, and the top spring becomes active after the stem rebounds. This layout means it doesn’t experience ‘top out’ and it provides more damping than other stems over fast, repetitive bumps.

    There is also a pre-load adjustment of the elastomer springs. Tightening these screws stiffens up the initial portion of the suspension travel, making it feel firmer, and taking away some of the ‘bounce’ or ‘springiness’ exhibited on other suspension stems.

    After testing this stem, we’ve found it’s the most effective single pivot suspension stem yet, with a 17.1% reduction in vibration over fast, repetitive bumps. We suspect the top elastomer spring is working overtime to damp high-frequency vibration.

    The USE VYBE suspension stem can be tailored to different rider weights and preferences by changing between four elastomer springs (super soft, soft, medium and hard), which should suit riders from 50 kg (110 lb) right up to >100 kg (220 lb).

    The VYBE stem only comes in two lengths (70 and 90 mm), and it can only be installed at a positive angle, so it will not work for all bike setups.

    Redshift ShockStop Suspension Stem

    Linkage: Single Pivot
    Spring Type: Elastomer
    Length: 80 to 120mm
    Min Weight: 220 g / 7.8 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    $189 AT AMAZON

    A more versatile single-pivot stem is the Redshift suspension stem. This is a proven performer, with a 20%+ reduction in vibrations compared to a regular stem when we tested it on a bumpy forest trail and fast gravel road. Krzysztof currently uses a Redshift as a comfort benchmark in our vibration tests.

    This stem offers excellent lateral stiffness and features quick compression and rebound characteristics to effectively damp high-frequency vibrations. It’s also highly adjustable – you get five elastomers, which can be combined to provide 15 different spring stiffness options.

    The Redshift stands out for its wide size range, with lengths from 55 to 120mm available in both 1 1/8” and 1 1/4” steerer tube sizes. There’s also a high-rise version in two lengths, as well as a lighter Pro model that shaves 15% off the weight for an extra $60.

    Uniquely, Redshift stems can be installed with either a positive or negative rise. That said, I didn’t enjoy the negative rise setup – the direction of impact from the ground doesn’t align well with the stem’s motion. I think it performs best in the positive orientation.

    Redshift ShockStop in 55-70-80-90-100-110-120mm with 6° angle:
    $189 at Amazon

    The Redshift ShockStop in 80-100mm with a high 30° angle:
    $189 at Amazon

    Redshift ShockStop Pro Lightweight in 80-90-100-110-120mm:
    $249 at Amazon

    Cane Creek eeSilk Suspension Stem

    Linkage: Single Pivot
    Spring Type: Elastomer
    Length: 70 to 100mm
    Min Weight: 225 g / 7.9 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    $219 AT AMAZON

    Cane Creek offers a single-pivot elastomer stem that’s very similar to the Redshift, but this one comes with a soft-to-firm switch.

    When it’s rough, run it unlocked, and when it’s smooth, stiffen it up. This means you can run a softer spring rate than usual, as you don’t need to compromise for all riding situations.

    If you prefer a cleaner look, the Cane Creek is also available without the lockout switch. Both models are available in 70, 80, 90, or 100mm lengths.

    Cane Creek makes it easy to change between the three spring rates. You don’t need to remove the handlebar like you do with the Redshift stem – undoing just one bolt allows you to swap in a softer or firmer elastomer.

    Unfortunately, the Cane Creek can only be used in the negative orientation, which again, is not optimal as the stem moves in a different direction from the forces coming up from the ground.

    Cane Creek eeSilk in 70-80-90-100mm lengths with switch:
    $219 at Amazon

    Cane Creek eeSilk in 70-80-90-100mm lengths:
    $199 at Amazon

    SGXBOS Suspension Stem

    Linkage: Multi Pivot
    Spring Type: Coil
    Length: 90mm
    Min Weight: 485 g / 17.1 oz
    Travel: 20mm / 0.8″
    Bar Clamp: 31.8mm

    $64 ON AMAZON

    Affordable coil-spring, multi-pivot stems are widely available under various names, including SGXBOS, JFOYH, Gaderth and MEROCA. Just note that there is a single length available with these stems (90mm).

    These stems are not the best choice if you’re planning on riding hard, as they tend to top and bottom out on rough terrain, making a clunking sound. But if your riding position is upright and your riding style is relaxed, they should offer decent performance, especially for the price.

    The TranzX Antishock is another cheap stem. However, this model has been lab-tested to be ineffective, so it’s best to skip it.

    Specialized Future Shock

    The last product I want to show you is the Future Shock, which is only available on Specialized gravel and endurance road bikes.

    This 20mm travel suspension element uses a sensitive coil spring just like the Kinekt stem, but it additionally has a hydraulic cartridge damper inside to control the spring speed. This product not only feels great, but it has a compression dial that allows you to quickly adjust the firmness from completely open to locked out.

    The reason why I wanted to include the Future Shock in this article is that it offers the most gravel road comfort of any front suspension product we’ve tested, and that includes suspension forks too.

    On a bumpy forest trail, we found the Future Shock could attenuate 6% more vibration than a bike fitted with both a Lauf suspension fork AND a Redshift suspension stem. On a fast gravel road, the Future Shock absorbed almost 20% more vibrations! This is an amazing result given we already know the Redshift stem is leaps and bounds more comfortable than a rigid stem.

    We’ve so far found the Future Shock to be the holy grail in terms of performance, adjustability, lock-out, and aesthetics. A bonus is that it can even fit super stem lengths.

    But the downside to this high-tech solution is that it’s only available on some Specialized bikes, and the complexity results in more servicing requirements, potential points of failure, and, in the future, the inability to obtain spare parts.

    Let’s finish up with a few quick, frequently asked questions.

    Suspension Stem FAQs

    Can you combine suspension forks and suspension stems?

    Suspension stems deflect just 10 to 20mm, so this movement will have a minimal effect on the handling of your bike. If you want better vibration damping on a fast gravel road or you feel the need for a small boost in suspension travel, a suspension stem would do that for you.

    Can you use front luggage with suspension stems?

    You can use a front bag with a suspension stem, but you will need to compensate by using a stiffer spring. That said, I’ve found that the best suspension stems work better without any luggage on the handlebars, as they can react more quickly to bumps in the road.

    Do suspension stems work on a quill stem bike?

    Yes, you can fit them with an adapter.

    Summary

    I originally expected the best suspension stems to be a gimmick, but ultimately, I’ve found them to increase the fun and enjoyment of cycling by way of a comfort boost, and you will appreciate that on longer rides.

    As a result, I can only recommend you try one.

    There are trade-offs to coil and elastomer springs, as well as single-pivot and multi-pivot stem designs. Make sure to carefully examine the pros and cons of each design to find the product that best suits your needs.

  • USE VYBE Suspension Stem Review: Game-Changing Comfort For Gravel Roads

    USE VYBE Suspension Stem Review: Game-Changing Comfort For Gravel Roads

    The USE VYBE suspension stem has been designed to improve ride comfort while maintaining your bike’s aesthetics.

    Thanks to 20mm of built-in suspension travel, this stem will reduce the jarring impact of bumps, potholes, and rough roads. This isolates your hands from road chatter, resulting in less fatigue and a more enjoyable time on the bike.

    After testing many suspension stems over the years, the USE VYBE is one of the most effective and least intrusive products. Let’s take a closer look.

    USE VYBE Suspension Stem

    vybe suspension stem

    Linkage: Single Pivot
    Spring Type: Elastomer
    Length: 70 and 90 mm
    Weight: 205 g / 7.2 oz
    Travel: 20 mm / 0.8″
    Bar Clamp: 31.8 mm

    The USE VYBE suspension stem looks just like a regular stem, but hidden inside are some springs. An advantage to a design this simple is that you can maintain your bike’s aesthetic while minimising the added weight. The penalty is just 50 grams (1.8 oz) compared to a USE alloy rigid stem!

    This suspension stem has a unique internal design with two elastomer springs. The bottom spring provides material damping when the stem compresses, and the top spring becomes active after the stem rebounds. This layout means it doesn’t experience ‘top out’, and it provides more damping than other stems over fast, repetitive bumps.

    The USE VYBE suspension stem can be tailored to different rider weights and preferences by adjusting the spring rate. It comes with four elastomer springs (super soft, soft, medium and hard), which should suit riders from 50 kg (110 lb) right up to >100 kg (220 lb).

    VYBE Suspension Stem
    You can firm up the initial part of the suspension travel using a 3mm Allen key.

    Once you’ve fitted the appropriate elastomers, you can now adjust the two independent pre-load screws – one for each elastomer spring. These are located on either side of the stem. Tightening these screws stiffens up the initial portion of the suspension travel, making it feel firmer, and taking away some of the ‘bounce’ or ‘springiness’ exhibited on other suspension stems.

    It’s all sounding pretty good so far, but there are a few limitations to the USE VYBE stem.

    USE VYBE Limitations

    The VYBE stem only comes in two lengths (70 and 90 mm) and one steerer size (1 1/8″). This will suit some riders but will fall outside the appropriate length range for everyone else. The VYBE can only be installed at a positive angle, which will not work for all bike setups.

    This stem is made in the UK, which makes the price high (£180). However, the advantage of local manufacturing is that USE can better control manufacturing tolerances and overall product quality. It is certainly made well.

    Another minor thing is that it can’t fit integrated light or cycling computer stem mounts. As a result, your cockpit might not look as neat.

    Pros and Cons: Single Pivot Design

    KOGA WorldTraveller Touring Bike

    The USE VYBE is a single pivot stem. It’s the lightest, simplest, and most ‘normal’ looking suspension stem design. But there are a few downsides.

    Single pivot stems are highly effective in the brake hoods, less effective on the bar tops, and almost ineffective in the drops. This is because when your hands are in the drops, there is little leverage forward of the pivot point.

    In addition, the suspension travel changes depending on where you place your hands. For example, if your hands are 50mm in front of the pivot point, rather than 100mm, you will only get half the suspension travel.

    Single pivot stems also experience slight forward tilting of the handlebar when they compress, as it travels on an arc rather than a straight line. This is not too much of a hindrance, but it is noticeable.

    Lastly, single pivot stems are less suitable with sweptback or flat bars. This is because your hands usually end up too close to the pivot point, reducing the available suspension travel.

    In comparison, multi-pivot stems like the Vecnum Freeqence keep your upper body suspended with the same spring rate, no matter where you place your hands on a drop bar. This ultimately means you will improve your comfort with your hands in the brake hoods, on the bar tops, or in the drops.

    Multi-pivot stems are highly compatible with sweptback and flat bars, as it doesn’t matter where your hands are relative to the pivot points.

    The downsides are the increased complexity, weight, and change in aesthetics.

    To see a video explanation of single pivot vs. multi pivot stems, watch Alee’s video HERE.

    Changing The Elastomers

    VYBE Suspension Stem
    You can access the elastomer springs when you remove the main pivot bolt.

    To swap elastomers, you need to unscrew the stem pivot bolt. My first attempt at changing the elastomers was with the handlebars on my bike, but this was a big mistake. As the elastomers weren’t held in place, everything fell apart after I had unscrewed the pivot bolt.

    My second elastomer swap went much more smoothly as I decided to remove the stem from the bike. This helped not drop any stem components, but the elastomer changing process is undoubtedly more fiddly than a Redshift Shockstop stem.

    A quick tip: The tuning bolts are attached to plastic plates, and if you’re not careful putting it all back together, it’s easy to misalign the components. Don’t fully unscrew these tuning bolts, or you’ll have problems!

    You can see a video of USE Components making an elastomer swap HERE.

    The Pivot Construction

    Since the elastomers are only accessible after removing the pivot bolt, you need to make sure that the bolt is lined up and screwed tight (10Nm). I read a report of a journalist whose handlebars detached mid-ride. USE Components told me it was a pre-production stem, and the issue has since been resolved.

    My production version has been solid. I’ve had no issues, though I did check the bolt every few rides to be sure. USE say the pivot bolt must be tightened to 10Nm. You can use a calibrated torque wrench to tighten the stem to the correct specification.

    Let’s now get to what we’re all here for: the performance of the USE VYBE suspension stem!

    Riding The USE Vybe Suspension Stem

    VYBE Suspension Stem
    The USE VYBE suspension stem blends into the aesthetic of any gravel bike. Image: USE-Components

    I really like the USE VYBE stem. It’s firm without being harsh, doesn’t bottom out, and doesn’t exhibit strange noises. It’s a great balance of comfort and rigidity.

    The suspension action is smooth and well-controlled. I never once felt the need for a lockout switch like on the Cane Creek eeSilk stem. Once the VYBE stem was fitted to my bike, I forgot it was there.

    Surprisingly, the firm ride feel doesn’t come at the cost of vibration-damping ability. Once I dialled the stem settings in for my weight and preference, the USE VYBE delivered excellent overall comfort (see the results below).

    The ability to mix elastomers and adjust the firmness makes the USE VYBE suspension stem perform so well that I questioned if I even need my HiRide suspension fork for most gravel terrain. After all, I could drop over 1 kg (2.2 lb) from my bike’s weight if I used this stem instead of a suspension fork.

    That said, the USE VYBE cannot offer the same level of grip or overall bike stability over rough terrain as my suspension fork. This is because a suspension fork suspends not only your upper body but the entire front of your bike, allowing you to generate more front tyre traction and achieve better braking.

    In addition, my suspension fork uses a much more advanced hydraulic damper, so it can absorb more energy after bigger impacts.

    The only downside of the USE VYBE suspension stem is that the handlebar tilts forward under compression. That feeling won’t be for everyone, but I believe this is a small price to pay for the significant comfort improvement.

    My Test Bike and Vibration Measurement Procedure

    I conducted this vibration test using my Mondraker Dusty gravel bike, fitted with a carbon fork and Lauf Smoothie 44 cm wide carbon handlebars.

    The bike was running Bontrager Girona Pro 42 mm tyres (41 mm measured) on Spank Flare 24 Vibrocore wheels. Tyre pressures were set to 34.5 PSI at the rear and 33 PSI up front, based on the Silca tyre pressure calculator. These pressure values are what I typically use for my 87 kg body weight on gravel roads.

    A direct comparison was made between a standard rigid stem, a USE VYBE suspension stem, and a Redshift ShockStop suspension stem. It was the same bike, same conditions, and all stems were 90 mm in length. The spring rate of the suspension stems was adjusted to my body weight and preferred riding style.

    I then performed a high-frequency bump test over a controlled obstacle at 25 km/h, designed to replicate the repeated impacts you’d encounter on a rough gravel road.

    You can read more about my vibration measurement procedure HERE.

    Vibration Test Results

     Average Acceleration (g)Vibrations When Compared to the Rigid Stem
    Alloy Rigid Stem2.44–
    USE VYBE Suspension Stem2.0217.1% Fewer Vibrations
    Redshift Suspension Stem2.353.8% Fewer Vibrations

    In my lab test simulating fast, repetitive bumps, the USE VYBE outperforms other suspension stems by a significant margin.

    It shows a 13.8% reduction in vibration compared to the Redshift Shockstop stem. This was such a big difference that I had to double-check my results to be sure. Yes, the same results again!

    I suspect the top elastomer spring (that’s only present in the USE VYBE) is working overtime to damp high-frequency vibration. This is a finding I’m excited about!

    USE VYBE vs Redshift Suspension Stem

    vybe suspension stem

    When it comes to performance, the USE VYBE suspension stem has the upper hand. It’s not only lighter, but it damps more vibration over fast, repetitive bumps. You can also fine-tune the suspension movement using the preload adjustment, bringing an extra level of customisation.

    Don’t write off the Redshift Suspension stem, though. You can buy it in more stem lengths (55 to 120mm) to dial in your bike fit. The Redshift ShockStop stem is a fair bit cheaper (>20%); it features a broader selection of elastomer spring rates, and swapping the elastomers is much easier.

    It can also be run in a positive or negative orientation to put your handlebars at a height suitable for your needs. Lastly, stem accessory mounts are also available for your computer and/or light, saving handlebar real estate and neatening up the cockpit.

    You can read my Redshift Shockstop suspension stem review HERE.

    Summary

    VYBE Suspension Stem

    The USE VYBE performs exceptionally over fast, repetitive bumps. It’s easy to adjust and barely adds weight to your bike.

    VIEW AT USE COMPONENTS

    The USE VYBE suspension stem is one of the best-performing stems out there. It damps high-speed bumps incredibly well, and its adjustability is unmatched. The exceptionally low weight gives you one less excuse not to try it.

    It’s one of many stem designs out there, each with pros and cons. You can learn more about the different stem designs in my Cycling Comfort Course (it’s 100% free).

    Yes, the USE VYBE is not cheap, but it’s still cheaper than a suspension fork. So, if you’re looking for extra comfort on a drop bar bike, I believe it’s worth a shot.

  • The Vecnum Freeqence Is The Best Suspension Stem I’ve Tested (Review)

    The Vecnum Freeqence Is The Best Suspension Stem I’ve Tested (Review)

    Suspension stems like the Vecnum Freeqence are nothing new.

    Several companies developed suspension stems for mountain biking in the early 1990s. The most notable models were the Softride Stem and the Girvin Flexstem, which were even used on bikes that won multiple mountain bike world championships!

    However, by the mid-1990s, suspension stems were superseded by superior-performing suspension forks.

    These days, suspension stems are primarily designed to increase the comfort of a rigid bike. They have significantly less suspension travel than previously (usually just 20mm), and they are stiffer, lighter, and much more reliable.

    I got my hands on one of the latest suspension stems to test, a model called the Vecnum Freeqence. While this stem might not be a well-known product, I think it should be known by every gravel rider in the world!

    In this review, you’ll find out why.

    What is the Vecnum Freeqence Suspension Stem?

    Linkage: Multi Pivot
    Spring Type: Elastomer
    Length: 90 to 120mm
    Min Weight: 287 g / 10.1 oz
    Travel: 30mm / 1.2″
    Bar Clamp: 31.8mm

    The Vecnum Freeqence is the most expensive suspension stem on the market right now – it’s €299 or US $325. But you get a surprising amount for your money.

    To start, this German-made product makes extensive use of high-quality 7075 aluminium, as well as titanium for the hollow axles. This keeps the weight within 100 grams (3.5 oz) of most rigid stems, and it’s about 200 grams (7 oz) lighter than comparable suspension stems.

    The stem’s suspension travel is uniquely divided into 20 mm of downward travel and 10 mm of upper travel, for a total of 30 mm. This not only prevents ‘top out’ but keeps your hands nicely suspended in the air over bumpy terrain.

    The Freeqence employs elastomer springs that offer a strong progression. This allows the stem to be noticeably supple in the first part of its travel, and much firmer when it is deeper in its suspension travel.

    Vecnum designed this stem for riders between 50 and 120 kg (110-265 lb). Interestingly, there is only one spring rate, but you can adjust the spring preload by tightening the screw on the side of the stem (3 mm Allen key). This firms up the initial portion of the suspension travel for heavier and/or more aggressive riders. In more technical terms, the spring won’t start compressing until the force on the stem is more than the preload force.

    In terms of aesthetics, the Freeqence has a unique look. My 7-year-old son says it looks like a sci-fi machine, and I can’t say I disagree.

    The components inside the stem are nicely protected from dirt and mud, which should translate into long, trouble-free usage. It’s available in three lengths (90, 105, and 120 mm), for standard 1 1/8″ steerers and 31.8 mm handlebars – all with a 3-degree rise.

    Vecnum says that the Freeqence can effectively reduce impacts and vibrations by up to 75%. I didn’t record this kind of improvement, but there are improvements over both rigid stems and other suspension stems – keep reading to see my vibration test results.

    The Multi Pivot Stem Design

    One of the defining features of the Vecnum Freeqence is its multi-pivot design.

    A multi-pivot stem keeps your upper body suspended with the same spring rate, no matter where you place your hands on a drop bar. This ultimately means you can achieve a decent comfort improvement with your hands in the brake hoods, on the bar tops, or in the drops.

    A multi-pivot stem is also suitable for flat bars and sweptback bars, as it doesn’t matter where your hands are relative to the pivot points.

    KOGA WorldTraveller Touring Bike

    In comparison, a single pivot stem (like the Redshift ShockStop) works most effectively in the brake hoods, less effectively on the bar tops, and is almost ineffective in the drops. This is because when your hands are in the drops, there is little leverage forward of the pivot point.

    Single pivot stems are largely ineffective with flat or sweptback bars, as your hands usually end up too close to the pivot point.

    In addition, the suspension travel changes depending on where you place your hands. For example, if your hands are 50mm in front of the pivot point, rather than 100mm, you will only get half the suspension travel.

    Lastly, a single pivot stem also experiences some slight forward tilting of the handlebars when it compresses, as it travels on an arc rather than a straight line. This is not too much of a hindrance, but it is noticeable.

    To see a video explanation of multi pivot vs single pivot stems, watch Alee’s video HERE.

    How Does It Feel On Gravel Roads?

    In one word, GREAT! The Freeqence gave me additional confidence in my rigid gravel bike to go faster and down rougher trails.

    The stem feels smooth on fast gravel roads, and it absorbs bigger hits (like square-edged rocks and roots) with ease. Thanks to the upward and downward stem travel, your hands feel adequately suspended in the air.

    This suspension stem has more material damping than you’d expect from a stem with elastomer springs. This results in significantly less rapid vertical movement than other stems – it almost feels as if there is a hydraulic damper hidden inside. The stem doesn’t ever feel too ‘springy’ either; overall, it feels very measured.

    But it’s not without its flaws.

    Are There Any Downsides?

    There’s a noticeable bobbling effect when pedalling hard uphill. Given the short range of motion, I can’t say it’s that big or disturbing, but you will notice it.

    You can also notice the 10mm of upward stem travel, especially when rapidly pulling up on the handlebars on technical terrain. Again, it won’t bother you much, but your bike might feel less connected to the ground below.

    If you’re coming from a rigid stem, you may also need to learn to trust your bike’s steering again, as the steering is a little different when your handlebars bounce a bit while cornering. It’s a quick adjustment, but something to keep in mind.

    Let’s now find out how the Vecnum Freeqence did in my vibration tests.

    My Test Bike and Vibration Measurement Procedure

    I conducted this vibration test on my Open WI.DE gravel bike fitted with Rene Herse Umtanum Ridge 650B x 55 mm tires at 35 psi (2.5 bar). The Vecnum Freeqence (105 mm length) was compared against a Redshift ShockStop stem (100 mm) and an aluminium rigid stem (100mm). The spring rate of the suspension stems was adjusted to my body weight and preferred riding style.

    I have two test scenarios: a big hit test that simulates riding across a 30 mm tall obstacle like a tree root or edgy rock, and a high-frequency chatter test that simulates riding on a bumpy gravel road.

    You can read more about my vibration measurement procedure HERE.

    Vibration Test Results

    Big Hit Test

    Average Acceleration (g)Vibrations When Compared to the Rigid Stem
    Rigid Stem (100mm)3.5–
    Vecnum Freeqence (105mm)3.111.5% Less Vibration
    Redshift ShockStop (100mm)4.220% More Vibration

    In the big hit test, the Freeqence performed better than other stems – I recorded 11.5% less vibration at the handlebar compared to the rigid stem.

    Part of the reason why the Freeqence performed well is that it offers a slower compression and rebound speed than the Redshift. This helps to effectively remove unwanted vibrations at the handlebars.

    Remember how this stem has 10mm of upward suspension travel in addition to its 20mm of downward travel? That feature also helped keep the vibrations in check as the stem could travel upward slightly after the hard compression.

    You might be wondering what happened to the Redshift stem, as it recorded 20% more vibration than the rigid stem. This obstacle induced a large amount of vibration, and the stem simply bounced up and down more than typical because the elastomers didn’t have enough material damping to mitigate it.

    From my perspective, this poor result didn’t translate to a less comfortable ride. While the handlebars moved more with the Redshift stem, it subjectively felt more comfortable over the obstacle than the rigid stem.

    High-Frequency Chatter Test

    Average Acceleration (g)Vibrations Compared to Rigid Stem
    Rigid Stem (100mm)2.7–
    Vecnum Freeqence (105mm)2.59.7% Less Vibration
    Redshift ShockStop (100mm)2.59.7% Less Vibration

    The Vecnum and Redshift stems were neck and neck in the high-frequency chatter test. They both reduced the vibration at the handlebars by 9.7% when compared to a rigid stem.

    This is an interesting result because both the Vecnum and Redshift stems felt more than 9.7% more comfortable than the rigid stem. This just goes to show that the products I test cannot be represented by a single number.

    I also tested the Freeqence’s vibration levels in the stiffest and softest stem settings on both of my obstacles. The differences were surprisingly minimal, which makes sense as these obstacles generate high forces that would exceed the spring preload force and make the stem quite active.

    How Does It Compare?

    L-R: Redshift ShockStop, Kinekt Suspension, and Vecnum Freeqence.

    I’ve now tested the three most common suspension stems available, so which is best?

    When deciding which stem is best for you, you should consider:
    – Your handlebar type (flat or drop bar)
    – Your riding position (low or upright)
    – Your riding style (sporty or relaxed)

    The Redshift ShockStop (review) is the lightest, stiffest, and most tunable suspension stem design. You’ll instantly notice its ability to reduce the jarring impact of a bigger impact – for example, a pothole in the road. The elastomer springs suit both sporty and relaxed riding styles and provide a fast but calm suspension feel. The simple, single-pivot design is most suitable for drop bar bikes, less suitable for flat bar bikes, and unsuitable for bikes with sweptback handlebars. A key feature of this stem is its sleek aesthetic – it looks just like a regular stem, blending in well on any bike.

    If your bike is more upright and you ride at a more relaxed pace, you might prefer the Kinekt Suspension stem (review). This coil spring stem offers the quickest, most responsive movement, which allows it to smooth out high-frequency chatter better than all other stems. With its multi-pivot design, it can provide a smooth, floating feel for all handlebar types and is available in very tall-rise designs.

    The Vecnum Freeqence is the middle ground between the Redshift and Kinekt. It’s the most sophisticated-feeling stem I’ve tested, with no top-out, easy spring firmness adjustment, and a nicely damped ride that isn’t ever too bouncy. This stem is significantly lighter than the Kinekt Suspension stem (287 g vs. 470 g in a 90 mm length), and it’s only slightly heavier than the Redshift ShockStop stem (266g in 90 mm).

    The multi-pivot design of the Freeqence offers the same comfort improvement, no matter where you place your hands on the handlebars, and the stem suits all handlebar types, all riding positions, and all riding styles.

    Summary

    The Vecnum Freeqence is the best suspension stem I’ve tested. It works effectively, is easy to adjust, and is great for all handlebar types.

    VIEW AT VECNUM

    The Vecnum Freeqence was unveiled in late 2021, but despite the passage of time, it’s still a relatively unknown product.

    This is a pity because the Freeqence delivers the same level of performance as the Redshift ShockStop in my high-frequency chatter test and does even better in my big hit test. These real-world measurements were backed up by a subjective improvement in comfort, too.

    The Freeqence has a refined feel that isn’t ever too bouncy, and it’s super quick and easy to adjust the firmness of the elastomer springs.

    I love that this stem employs a multi-pivot design as it allows me to unlock the full suspension comfort, no matter whether I’m riding in the hoods, drops, or bar tops. It’s ideal for those using flat and sweptback handlebars, too.

    I’ve found that suspension stems instantly improve your riding experience on a gravel bike, and the Vecnum Freeqence is a standout in terms of what’s available.

  • Kinekt Suspension Stem Review: Too Springy?

    Kinekt Suspension Stem Review: Too Springy?

    I’m always eager to test products that promise improved comfort at the handlebar. This is because there are lots of comfort-improving products for the back of a gravel bike but very few for the front.

    The Kinekt suspension stem is a product that will replace the rigid stem on the front of most bikes. It promises a similarly smooth ride to their Active Suspension seatpost.

    But how effective is it really?

    Suspension Stem Testing

    A while ago I tested the Redshift ShockStop suspension stem, and ever since, it has been installed on my benchmark bike to help me ride comfortably on rough gravel roads.

    At first, I was using the soft set of elastomers because I wanted to extract the maximum comfort from it. Then I realised that this comfort comes at a hefty price: a lot of unwanted movement (up and down). So I switched to a firmer set of elastomers and am now enjoying the ShockStop even more.

    But the ShockStop is not perfect. For me, the biggest flaw is the lack of cushioning when you ride in the bar tops. This is simply because the ShockStop stem relies on leverage, and you have less leverage at the bar tops than at the hoods.

    The Specialized FutureShock made this difference abundantly clear to me. This spring-based solution offers even greater comfort regardless of your hand position.

    And this brings me to the Kinekt Suspension stem.

    The Kinekt Suspension Stem

    Just like the Specialized FutureShock, the Kinekt uses a spring to improve front-end comfort.

    With this stem design, your upper body weight will easily compress the internal spring – you really don’t have to put much weight on the handlebar to feel this effect. As a result, your bars can very effectively ‘float’ over bumps and road imperfections.

    As the stem is activated by a small linkage, it also works very effectively in every hand position of a drop bar. It’s suitable for light riders too as there are multiple spring rates available.

    I immediately felt extra comfortable on Kinekt stem, much more so than the Redshift ShockStop. The Kinekt provides more comfort in the bar tops, drops, and hoods.

    But this stem comes at a price, which we will get to later.

    Kinekt Stem Setup

    I received a Kinekt stem with three different springs that you use according to your body weight.

    Just like their suspension seatpost, the soft and medium springs were not suitable for my 83kg/183lb body weight because they induce too much ‘bounciness’. So I swapped in the firmest spring.

    It’s worth noting the Kinekt stem cannot be flipped to achieve a negative rise. As a result, your handlebar might be higher than your current bike setup (provided you do not have any headset spacers below your stem).

    Additionally, you should keep in mind that the stem’s ‘sag’ will affect its stem length. My 105mm stem is around 110mm long with sag, and it drops the handlebar height by approximately 10mm too.

    Benchmark Bike Setup

    For this test, I set up a 105mm long Kinekt stem with the firmest spring rate.

    I fitted the stem to my benchmark bike, which is an Enigma Escape gravel bike with an Open U-Turn fork, Coefficient Wave handlebar, Rene Herse Barlow Pass 38mm tires, and Spinergy GX wheels.

    I used two different test tracks to measure the vibrations – one is a bumpy forest trail and the other is a fast gravel road.

    The first vibration readings were taken with 40 psi in the tires, which will help us discern any differences between stems. And the second test was at 30 psi to better see how the stem improves the comfort of your bike.

    Vibration Test Results

    You can see my vibration measurement procedure & outdoor test courses HERE.

    With 40psi in the tires on the bumpy forest trail, the Kinekt stem offered a 25% vibration improvement over a rigid stem and a 10% improvement over the Redshift ShockStop.

    Similarly, on the fast gravel road, the Kinekt damped 26% more vibrations over the rigid stem and 10% over the ShockStop.

    These are really big numbers! While I expected a big improvement over the rigid stem, the 10% improvement over the ShockStop is particularly impressive.

    But here’s the thing – I don’t ride my gravel bike with 40 psi in my tires. So let’s see the results with 30 psi.

    With 30psi in the tires on the bumpy forest trail, the Kinekt stem now only offers a modest 5.5% improvement over the Redshift Shockstop. This is because the Rene Herse Barlow Pass tires are now deforming much more, and providing extra comfort.

    Similarly, on the fast gravel road, the Kinekt stem damped only 2% more vibrations than the Redshift. This is no longer much of an improvement.

    Right, I have a few more important things to note about the Kinekt stem.

    Top Out and Bottom Out

    The Specialized FutureShock 1.0 is great at improving comfort. But it’s prone to topping out when you’re climbing, which can get mildly annoying, and it will occasionally bottom out too – even when you use a firm spring.

    Similar to the FutureShock 1.0, the Kinekt Suspension stem does not have any additional damping. It sometimes bottoms out, but for me, the more irritating thing is the top out when climbing or accelerating hard. Tap, tap, tap…

    In ‘normal’ riding conditions, this movement is luckily not too noticeable. But for my sporty and more aggressive riding style, it certainly is.

    Disconnectedness From The Bike

    Another issue I’m finding is that the Kinekt stem makes your handlebar feel quite disconnected from your bike when you ride.

    It actually took me a while to feel confident while riding my bike. The stem has great side-to-side stiffness but I can’t help but feel my hands are just hanging out in the air.

    In comparison, the Redshift ShockStop stem provides much more connectedness, and definitely suits my sporty riding style much better.

    Aesthetics and Weight

    When I was riding the Kinekt Active suspension seatpost, I got mixed opinions about the way it looks. It’s certainly not as sleek as the Redshift ShockStop seatpost. But it’s not a complete abomination either, at least in my opinion.

    I feel the same about the Kinekt suspension stems – they’re not super sleek, quite chunky actually. But that’s all ok because it feels solid.

    The Kinekt weighs almost 500 grams, which is the price to pay for all that added extra comfort.

    Is the Kinekt Active Stem Worth It?

    When I was testing the Specialized FutureShock 1.0, I was so impressed with its comfort that I wished there was a way to get a similarly performing product without needing to buy the whole Diverge gravel bike.

    Now, we have just that – the Kinekt stem performs as well as the FutureShock and can be fitted to any bike.

    While the Kinekt is not perfect, it will still provide a significant comfort improvement over any rigid stem, and even the ShockStop stem when you use higher-pressure tires.

    The only thing you should consider is your riding style. For leisure riding, gravel touring, or any upright ride position setup, I think you will love the comfort that the Kinekt stem offers.

    But if you ride in a sporty position and want to ride hard, then I think the Redshift ShockStop stem is a better choice. This stem feels more connected to your bike and won’t experience the same top and bottom-out characteristics.

    You can support the CyclingAbout Comfort Lab by purchasing a Kinekt Suspension stem on Amazon. Simply click HERE to make your purchase, and a small commission will come our way.

  • Redshift ShockStop Suspension Stem Review: Huge Comfort Result!

    Redshift ShockStop Suspension Stem Review: Huge Comfort Result!

    The Redshift Shockstop stem is a suspension stem designed in the USA and over the years has gained a lot of very positive reviews.

    Except for adding a suspension fork to your bike, this is about as good an upgrade as you can make to improve the front-end comfort of your bike. Especially for its somewhat reasonable price (US $170 on Amazon).

    One of the only comparable solutions is the Specialized FutureShock. But it comes with the Specialized Diverge gravel bike, so you will either need to get a whole new bike…

    Or you could simply fit the Redshift ShockStop stem to your current bike.

    Redshift’s suspension stem uses elastomers that allow up to 20mm/0.8″ of handlebar deflection. The softer the elastomer combination, the more flex you will get.

    Redshift suggests different combinations depending on rider weight and type of the handlebar but I strongly recommend experimenting a bit to find the best solution for you. I preferred the softest combination designed for a drop bar, as it gave me noticeable flex in all situations.

    Ride Impressions of the Redshift ShockStop Stem

    Redshift ShockStop Suspension Stem

    Before using the Redshift ShockStop, I always thought that keeping my arms loose and putting more weight on the back of the bike was the best way to mitigate the impact of vibrations on gravel roads. And, of course, loosening your arms and hands still helps.

    But the Redshift ShockStop takes care of all front vibrations for you, so you can enjoy gravel roads for a longer period of time.

    Keep in mind the best results are felt when riding in the hoods or drops. This stem is not as effective on the bar tops because you have less leverage over the elastomers.

    Vibration Test Results

    You can see my vibration measurement procedure & outdoor test courses HERE.

    For this test, my Jamis Renegade benchmark bike was set up with 700C x 43mm Panaracer Gravelking SK tires using both a rigid FSA stem and a Redshift ShockStop stem. These stems have an identical length of 90mm and a 6-degree rise.

    We can see that the suspension stem is able to absorb 23,3% more vibration on the bumpy forest trail at 40 psi. And it was 30,3% more comfortable when I lowered the tire pressure to 20 psi. These are huge comfort improvements!

    If you’re wondering why the lower tire pressure yielded more comfort, it’s simply because the tire at a lower pressure can absorb lots more vibration. In fact, the stem is likely working slightly less effectively due to its higher spring rate.

    But even without the tire doing a lot of work (40 psi), the stem is working incredibly well.

    The vibration damping is a touch lower on the fast gravel road, but it’s still well over a 20% improvement compared to a rigid stem. That is pretty incredible.

    Summary

    The Redshift ShockStop stem works wonders and makes your ride both more comfortable and enjoyable. That’s based on my subjective experience and my objective vibrations measurements.

    If you want to maximise your front-end comfort, this stem is one of the best comfort upgrades you can make. I will certainly be installing this suspension stem on my benchmark bike for all future tests.

    You can support the CyclingAbout Comfort Lab by purchasing a Redshift ShockStop stem on Amazon. Simply click HERE to make your purchase, and a small commission will come our way.

  • Comfort Goods! The Latest Suspension Seatposts, Stems and Handlebars

    Comfort Goods! The Latest Suspension Seatposts, Stems and Handlebars

    Comfort is paramount when you’re spending large amounts of time on your bike.

    With rigid gravel bikes gaining in popularity, bike and component manufacturers are currently finding ways to add minimally-damped suspension to our bikes to make them both more comfortable and faster (I will be making my case for increased speed in an upcoming resource).

    KOGA WorldTraveller Touring Bike
    The Cane Creek eeSilk suspension seatpost that I use on my touring bike.

    Additionally, we have studied the effect of whole-body vibrations on the human body, and it turns out they can be quite damaging. Over time they can increase the risk of various ailments, including low back pain and spinal degeneration. This is one reason why we regulate vibration exposure in industries that use heavy machinery.

    With comfort, speed and health in mind, let’s take a look at the suspension stems, seatposts and handlebars that have been released in the last year.

    I’d recommend having a poke about CyclingAbout for more information about comfort components. I have in-depth resources on:

    Vecnum Freeqence Suspension Stem

    Suspension stems are nothing new. You might have seen them on rigid mountain bikes in the mid-1990s before suspension forks really took hold.

    After a small hiatus, suspension stems are back, and can significantly reduce the shock transmitted to your upper body on rough surfaces. GravelBikes.cc have measured an 18% to 26% reduction in handlebar vibrations compared to a regular stem on gravel roads.

    The Rockshox Rudy suspension fork has just 30mm of suspension travel, similar to a suspension stem.

    The main difference between a suspension fork and stem is that only your hands and upper body are suspended with a suspension stem. This is great for keeping you comfortable, but it will only minimally improve your bike’s performance.

    In comparison, a suspension fork suspends not only your upper body but the front of your bike too. This improves your front-wheel grip and makes for a more stable bike on rough roads. The downside to suspension forks is that they add weight, complexity and the need for regular service intervals.

    The Vecnum Freeqence stem looks to be a great new option. Unlike the Redshift ShockStop stem (that I use on my touring bike), it uses a parallelogram linkage design so that the handlebars do not tilt forward under compression. This allows the Freeqence to feel more like a suspension fork in its movement.

    The Freeqence uses an elastomer-spring setup with 30mm of travel, which can be adjusted to accommodate riders from 50kg through to 120kg. While coil-spring stems like the Kinekt are highly reactive over fast bumps, the Freeqence should feel a bit more ‘muted’ in comparison, as the properties of elastomers have more inherent damping.

    Elastomer springs also tend to feel less ‘springy’ (for lack of a better term) when you’re riding along on smooth surfaces. In other words, the Freeqence will likely bounce around a touch less than the Kinekt (there is no ‘lock-out’ option on either of these stems).

    The downside to elastomers is that they can firm up in cold conditions, rendering them less effective – so, skip this design if you need it to work well in sub-zero conditions.

    The Freeqence uses premium materials, which results in a stem weight ~40% lighter than the closest linkage stem competitor, the Kinekt Suspension Stem. However, these premium materials and German manufacturing result in a very high purchase price.

    Vecnum Freeqence Suspension Stem
    Stem Lengths90, 105, 120mm
    Spring RatePre-Load Adjuster (50-120kg rider)
    Stem Weight287-295 grams (10oz)
    Suspension Travel30mm
    Price€299

    Cane Creek eeSilk+ 35mm Suspension Seatpost

    I’ve been using the Cane Creek eeSilk seatpost on my touring bike for the last 30,000km, and I really like it. With just 20mm of travel, I can ride comfortably on most dirt roads without noticing it working underneath me.

    Cane Creek has just released a new model called the eeSilk+, which has about twice the suspension travel (35mm). Being elastomer-based, you get the advantage of it feeling quite ‘muted’ on smooth surfaces, but with the boost in travel, the eeSilk+ can isolate your body from even bigger holes and depressions.

    I suspect this might be the suspension seatpost to go for if you’re both riding long stretches on smooth surfaces (as it’s not too springy), but also want as much comfort as possible on rough dirt tracks.

    Cane Creek eeSilk+ Suspension Seatpost
    Seatpost MaterialCarbon or Aluminium
    Seatpost Diameter27.2mm or 31.6mm
    Seatpost Length362mm (Carbon), 387mm (Alloy)
    Spring RateFive Elastomer Options
    Suspension Travel35mm
    Weight323-378 grams (11-13oz)
    Max Rider Weight113kg/250lb

    Redshift ShockStop Pro RT Suspension Seatpost

    The new Redshift ShockStop Pro RT is a direct competitor to the Cane Creek eeSilk suspension seatpost.

    Like the eeSilk, it uses an elastomer spring and has 20mm of travel, making it ideal if you just want to take the edge off everything. This should be a great product for a mix of road and smooth gravel surfaces.

    While it’s 100 grams heavier than the eeSilk Carbon, the elastomer is hidden deep inside the seatpost, which should result in less maintenance (I am cleaning and lubing the elastomer in my eeSilk every few months).

    Redshift ShockStop Pro RT Seatpost
    Seatpost Size27.2mm x 280mm (or 350mm)
    Spring RateTBD Elastomer Options
    Suspension Travel20mm
    Weight380 to 415 grams (13-14oz)
    Rider Weight Limit110kg/242lb
    PriceUS $299

    Redshift Shockstop Pro Suspension Stem

    Along with the Pro RT seatpost, Redshift has released a Pro version of their suspension stem. This stem uses titanium hardware and weight-reducing CNC machining to get the weight down to between 230 and 250 grams, depending on the stem length.

    Functionally, it’s the same as the regular ShockStop stem that I have fitted to my touring bike. There are 15 different spring rates, which suit flat bars and drop bars, heavy riders and lightweight riders.

    As I mentioned earlier, the biggest downside to this simple and lightweight stem design is that the handlebars tip forward under compression. This takes a little getting used to.

    KOGA WorldTraveller Touring Bike

    It also feels strange in the negative stem orientation as its direction of movement is different from the forces coming up from the ground – I expand more on my experience with the Redshift stem HERE.

    Redshift ShockStop Pro Stem
    Stem Lengths80, 90, 100, 110, 120mm
    Stem Angle+/- 6 Degrees
    Stem Spring Rates15 Elastomer Options
    Stem Weight230-250 grams (8-9oz)
    Suspension Travel10-20mm (depending on length)
    PriceUS $249

    Fasst Flexx Alloy Handlebar

    Fasst Company has been making shock-absorbing handlebars and footpegs for motorbikes for years now. But more recently, they’ve delved into the mountain biking world with a handlebar that flexes up and down while you ride. And it reviews very well.

    The Fasst Flexx Enduro handlebar is intended to reduce rider fatigue and arm pump, allowing you to ride faster, longer, further and with more control. While it is primarily designed for mountain biking, there is no reason why it wouldn’t suit other flat bar bikes too.

    There are four different elastomers that can be fitted to optimise the flex for both light and heavy riders. You can also optimise the elastomers around the terrain – for example, on mellow dirt roads you might prefer a softer elastomer than if you were riding down rutted out singletrack.

    Fasst Flexx Enduro Handlebar
    Bar Width800mm (Uncut)
    Bar Backsweep8 or 12 Degrees
    Spring RatesFour Elastomer Options
    MaterialCarbon or Aluminium
    Weight450 to 550 grams (1.0-1.2lbs)
    PriceUS $325 to $425

    An interesting alternative to the Fasst Flexx is the Baramind BAM MTB.

    Instead of using elastomers and pivots, this handlebar is constructed using a mix of carbon fibre and fibreglass, resulting in a lighter 290g/10oz handlebar. It can be adjusted with two different spring rates and it’s about half the price to boot.

    Looking at the slo-mo video of it in action, it’s very effective too.

    Another option again is the One Up Components Carbon Handlebar. This handlebar has been engineered with vertical compliance in mind, and according to various testers, does exactly what it says on the tin. This option is also the cheapest (US $140) and lightest (220g/8oz).

    There is no adjustable spring rate to these bars, so they’ll be most effective under a heavier, more aggressive rider on rougher terrain.

    FSA NS VAS Stem

    There are three elastomer options to choose between. Image: BikeRumor

    An interesting new comfort product is the FSA NS VAS stem. It sandwiches an elastomer between the stem faceplate and your handlebar to reduce vibration transmission to your hands and upper body.

    FSA are claiming 47% more vibration attenuation, but who knows how this was measured. Given the vibration testing of different suspension stems, under most gravel riding speeds, I’d expect this stem to offer closer to 10% more vibration attenuation than a regular stem – which is not to be scoffed at.

    FSA NS VAS Stem
    Stem Lengths80, 90, 100mm
    Stem Angle-6 Degrees
    Spring RatesThree Elastomer Options
    Weight291g/10oz (100mm)
    Price€160
  • Modern Suspension Stems: Making Your Ride Smoother

    Modern Suspension Stems: Making Your Ride Smoother

    Comfort is paramount when you’re spending large amounts of time travelling by bike.

    There are already a number of ways to quickly and affordably increase bike comfort including using wider tyres, comfort seatposts, gel bartape and forgiving saddles.

    But one area not often explored is the stem.

    Girvin Flexstem Suspension Stem

    Suspension stems are not a new thing. They were available for rigid mountain bikes in the mid-1990s but were rendered obsolete when suspension forks became commonplace.

    The Girvin Flexstem was perhaps the most well-known model at the time, but nowadays people like to regale tales of how disconcerting they were to use. Amongst those who even knew suspension stems existed, they have a pretty bad rep.

    I recently met someone who swore by his 1996 SoftRide suspension stem. His touring bike had rather narrow tyres and a road bike fork, so the stem was able to do the majority of the front-end shock absorption.

    Given that touring bikes don’t have suspension or need much travel, perhaps they are the perfect candidate for a suspension stem?

    Why Should You Use A Suspension Stem?

    The idea behind the suspension stem is that it dampens road bumps, shocks and buzz before it gets to your body, reducing impact forces on your hands and wrists and keeping you more comfortable on your ride. This allows you to ride further and more efficiently on uneven road surfaces.

    The suspension stems these days are often optimised around road riding, resulting in much less travel than the stems of the past. Manufacturing techniques have also improved vastly to now provide a much lighter and more adjustable product than 20 years ago.

    A suspension stem can eliminate the need for a suspension fork on dirt roads, saving a significant amount of weight from a bike. In addition, when you forgo a suspension fork, you no longer have to worry about making your panniers ‘sprung’ if you use them.

    It could even be that suspension stems offer more comfort-per-gram than wider tyres for your bike. Think about it, wider tyres and tubes will often add much more than 100 or 200g to a bike. Lightweight comfort anyone?

    Why Should You NOT Use A Suspension Stem?

    StaFast Suspension Stem

    The biggest issue is that any downward force to the handlebars will result in energy loss. This is not great for people who like standing up on the pedals, but shouldn’t be much of a problem for people who spend most of their day in the saddle. An issue that the 90s suspension stems suffered was movement under heavy braking. I presume that this effect is lessened on the latest generation of products given how much less suspension travel there is.

    Weight weenies may care that suspension stems will add grams to their bike – we’re talking 100-200g at the most.

    And finally, given that there are pivots, elastomers and moving parts, these stems are likely to be less stiff than a regular stem.

    TranzX Antishock Stem

    TranzX Antishock Stem

    Released in 2014, the Antishock stem is the most simple and lightweight option here, in fact, it’s already found on many endurance-focussed road bikes. The elastomer is located in a two-piece steerer clamp providing a few millimetres of travel. The weight of the stem is not at all prohibitive. Image: Tour-Magazin.de

    US $135 // 4-6mm travel // 198g (100mm)

    Redshift ShockStop Stem

    Redshift ShockStop Suspension Stem

    The ShockStop is currently on Kickstarter and looking to easily hit its target. It’s an adjustable stiffness stem designed for road riding. It employs two elastomers and two sealed cartridge bearings at the pivot to smoothen out the road – it should be almost maintenance-free. It won’t be available until April 2016 but looks to be a solid option. Image: RedShiftSports.com

    US $99 // 10-20mm travel // 250g (90mm)

    StaFast Air Sprung Stem

    Stafast Suspension Stem

    The StaFast is a bit different to the other options in that it is adjustable via air damping to suit both different riding styles and terrain. This is undoubted the most advanced option here. Other than being able to be fine-tuned like a suspension fork or shock, the StaFast also features 25 degrees of angular adjustment so you can really dial in your bike position. Oh, and the machining looks really nice! Image: Sta-Fast.com

    US $350 // 15-20mm travel // 367g (95mm)

    GripFast Shock Absorber

    GripFast Shock Absorber

    A slightly different design yet similar function is the GripFast shock absorber. My main concern for this product is that it dramatically changes your position on the bike by shifting you up 50mm or more. It is also heavier than the other options when you factor in a stem too. Image: BikeRumor.com

    US $99 // 14mm travel // 300g

    Should You Buy One?

    I’d start by fitting the widest possible tyres to your bike, along with a gel bar tape or silicone grips before deciding to try a suspension stem.

    If you spend a fair chunk of time on bumpy roads, a suspension stem will likely have a marked difference for your comfort. You have the most to gain if you ride a bike that has tyres on the narrow side (less than 40mm).

    I look forward to testing some suspension stems on my future adventures.