This Box Two Integrated headset features an aluminum top cap, CNC-machined bearing cover, and split crown race with super-smooth rolling, precision 45x45 bearings. The 1.5" headset fits frames that use 41.8mm 45/45 upper and 52mm lower cups. The crown race is 40mm. It also includes a 30.0mm crown race which allows you to run a straight 1-1/8" fork in a tapered head tube.
Color: Black
