BONTRAGER RHYTHM COMP KNOCKBLOCK STEM has_product_type Bike and frame weights are

Bike and frame weights are based on pre-production painted frames at time of publication

Black/Blue

Large and in charge

An ultra-durable rim with 29 mm internal

Know your ride

BONTRAGER RHYTHM COMP KNOCKBLOCK STEM has_product_type Bike and frame weights are31. 8 mm of durable control Run your favourite 31. 8 mm 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. Features Bontrager Rhythm Comp KnockBlock Stem Get 31. 8 mm handlebar compatibility with your Knock Block system Also compatible with standard headsets and spacers The Knock Block system protects the