
Box Two integrated headsets feature an aluminum top cap, CNC-machined bearing cover, & split crown race with super-smooth rolling, precision bearings. The 1.5" headset is designed solely for tapered headtube race frames & forks but also
Includes:: an adapter which means that you can run a straight 1-1/8" inch fork in a tapered head tube. It has a 45°x 45° upper bearing & a 36°x 45° lower bearing.