31.8mm of durable control
Run your favorite 31.8mm clamping diameter handlebar on a bike with Knock Block with the Rhythm Comp 31.8. It adds Knock Block compatibility to a durable stem with multiple lengths to let you fine-tune the fit to your ride.
Lighter tubes for faster wheels
Improve the performance of your bike by reducing rotational weight with Bontrager Lightweight tubes. They feature a slimmer butyl wall to improve ride feel and reduce weight.
