Exciting news, Gates will be introducing new “high-mileage” sprockets for expedition cyclists and global bike trekkers at Eurobike this year. The CDX:EXP sprockets are designed for use with Rohloff 14s internal hubs and will offer extended range in off-road conditions. I can’t wait to test it out!
As you may be aware, I spent over two years using the standard Gates CDX system on a ride that took me from Europe to Australia. It was at 31,000km that I snapped my first belt, so I’d have already said that the system does “high-milage” well.
What makes this system different?
Gates say that the EXP sprockets have 25% more surface area than the current CDX system. My understanding is that by increasing the surface area you can reduce the belt tension and wear on the system.
The CDX:EXP kit will be available in three front sprocket sizes ( 39T, 46T, and 50T) and four rear Rohloff compatible sprocket sizes (19T, 20T, 22T, and 24T). Gates say that the extra strength only results in a few extra grams.
You can expect the CDX:EXP front sprockets to go for US $70-80, the rear sprockets US $90-110 and the belts US $80-100 each.