FSA The Pig DH Pro Threadless Mountain Bike Headset - 1 1/8 Inch
1-1/8" 36/36 angular contact bearings (upper), industrial bearing (lower). Forged chromoly crown race. Forged chromoly lower cup. 6061/T6 upper cup. Gyro compatible. Stack height 15.4+16=31.4. Weight: 176.4g