This is the Problem Solvers Headtube Reducer (Which reduces 1.5" to 1-1/8"). Features: Adds 9mm to headset stack height 20mm deep, 25mm overall height per cup. Adds 9mm to headset...
Handlebar diameters keep gettin’ bigger. If you want to use your old bars in a new, larger-diameter stem, we’ve got a shim for you. Varieties are available to adapt 25.4,...
