Fourstroke 01 Headset Size:One Size SHIMANO 11 and 12 speeds

SHIMANO 11 and 12 speeds Direct Attachment and CAMPAGNOLO 12 speeds rear derailleurs are compatible with this dropout hanger

effortlessly absorbing harsh trail chatter while maintaining maximum steering stiffness

ICS Carbon is BMC's first iteration of one-piece carbon fiber cockpits

The stem body is a true mastepiece of 3D forged and CNC machined Aluminium while the composite cable guide and hardware feature the most advanced materials from premium Swiss suppliers

Designed for riders who demand precision handling and a clean

Fourstroke 01 Headset Size:One Size SHIMANO 11 and 12 speedsThe BMC Fourstroke eplacement headset kit fit headtube size 1. 5", 45 45 ACB (OD52. 0*ID28. 6). It includes 2x FSA MR170 (070E RS) bearings, an alloy H6153 crown race, and the alloy compression split ring. Every headset part of the headset assembly is including in this kit for Integrated System 52 (IS52 28. 6 IS52 40). 2x MR170 {070E RS} 52x7x45 45 bearings, alloy compression ring, crown race with integrated rotation stopper.