BBB - Tapered IntegratedBBB TAPERED INTEGRATED The Integrated headset keeps your handlebar turning nice and smooth to make sure you can take every corner as tight as you want, and the durable sealed bearings makes sure you can keep doing that for a long time! BHP 45: Integrated tapered headset SHIS Lower IS47 33 SHIS Upper IS42 28. 6 45x45 deg Sealed CrMO Lower Bearing 45x45 deg Sealed CrMO Upper Bearing Cone Spacer Diameter 46mm Cone Spacer height 15mm Crown race included