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.
Allows installation of English threaded cups in many BMX and older American made full-size bicycles
Truvatuiv bottom bracket adapter to convert American BB (51mm) to Euro BB (34.8mm) measurement consisting of two aluminium press fit cups for 68mm frames.