the performance of your flat pedals drastically suffers

arch compression which eliminates annoying sock bunching and adds comfort

Compatibility: Compatible with with popular 46mm 12-notch OD bottom brackets such as:

000 710845749636

BOX One Prime 9 Speed Twin Lever Shifter - Black - Single Shift - 22.2mm Bar Clamp - 9 Speed eBay the performance of your flatWith the big brands making a big song and dance about adding an extra gear or an extra tooth to their cassettes, Box is doing things a bit differently with their wide range 9 speed setups. The Box One is the flagship model in the Prime 9 lineup and offers top level performance across 9 gears. You'll have the same range as your mates on their 12 speed setups, but 9 speed so much easier to set up so you'll be able to spend more time riding and less time