BONTRAGER RHYTHM COMP KNOCKBLOCK STEM Finance Core-lock clamp eliminates slipping by

Core-lock clamp eliminates slipping by securing grip core to bar

LockDown dividers make helmet strap management clean and easy to adjust

Displays Trek Certified Service reminders based on your selected bicycle type

Designed for speed

BONTRAGER RHYTHM COMP KNOCKBLOCK STEM Finance Core-lock clamp eliminates slipping by31. 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