Headset B-11-P Bearings Size:One Size The frameset is compatible with

The frameset is compatible with any 1"1/8 stem and is also compatible with the separately available BMC Pursuit Base Bar

Additionally

URS AMP specific head tube

This kit includes a front derailleur hanger

Headset B-11-P Bearings Size:One Size The frameset is compatible withThe HS B 11 BMC replacement headset kit includes FSA standard bearings, the crown race, a nylon compression split ring, ICS 5mm shape top cone (Aero 62x47 17) for 1"1 8 round steerer, 2 carbon 10mm spacers, and 1 carbon 10mm conical spacer. This kit contains: MR170 lower bearing MR155 upper bearing crown race with stopper alloy compression ring ICS 5mm shape top cone (Aero 62x47 17) for 1"1 8 round steerer 2x 10mm carbon spacers 1x 10mm carbon conical