Just days after we covered the JTek range of Road-to-MTB shift cable adapters, Wolf Tooth announced a product that works in the exact same way. Called the Tanpan, it uses a sealed bearing roller to adapt your cable pull ratio from 10 or 11 speed Shimano STI shifters to Shimano MTB derailleurs.
Due to the necessity of a matching cable pull ratio, road shifters will only work with road derailleurs. This can be an issue on a touring bike when the lowest road gear on offer is 34t (front) x 32t (rear). By using MTB components you’ll be able to get cassettes with larger than 42 teeth, and front chainrings with as small as 22 teeth – significantly reducing the gear inches of your lowest gear. That should get you up any climb worth riding!
‘Tanpan’ loosely translates to ‘negotiator’ in Mandarin – Wolf Tooth like to think of this product as able to cross boundaries and break down walls – at least in the drivetrain world.
The Tanpan comes in two different models which are very straight forward:
SH10 – Optimised for 10 speed Shimano road shifters and 10 speed Shimano MTB derailleurs
SH11 – Optimised for 11 speed Shimano road shifters and 11 speed MTB derailleurs
Wolf Tooth say that it will also combine 10/11 speed SRAM derailleurs with 10/11 speed Shimano shifters, although they note that the shifting performance is ‘moderately decreased’.
The 17 gram Tanpan is CNC machined in the USA and finished with a barrel cable adjuster, stainless steel hardwear and a high quality steel cartidge bearing. You can get your hands on one for US $39.95.