Bontrager Rhythm Comp Stem

Use your favorite 31.8mm 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 so you can adjust the fit to your ride.

Product details
31.8mm handlebar compatibility for your Knock Block system
Also compatible with standard headsets and spacers
The Knock Block system protects the frame from fork and handlebar impacts by eliminating handlebar over-rotation.
Available in a wide range of sizes for today's mountain biker
See Replacement Parts for other Knock Block parts
Approved for carbon bars and head tubes