Profile Racing Outboard Bottom Bracket 73mm Kool Stop and the weight saving from

and the weight saving from the rotational mass of the wheel feels fantastic

•  Top bolt knee friendly clamp

Elite and Totem hubs

Great for the re-issue GT power Series Alloy cranks

the first all-new driver design from Profile Racing in years

Profile Racing Outboard Bottom Bracket 73mm Kool Stop and the weight saving fromProfile Racing is pleased to announce the arrival of the Outboard Bearing Bottom Bracket kit for Profile Race cranks. Outboard Bearings are larger, stiffer, smoother, and more durable that our existing Euro bottom bracket. We have tube spacers for 68mm, 73mm, and 83mm BB shells, however, we will have the rest of the common BB shell widths available soon. 19mm, 22 or 24mm spindle size