Headsets

Replacement headset bearings from FSA. - Compatible with most Trek MTB integrated headset systems - Sealed bearing for long life - Compatible with Knock Block Headsets

FSA bearings that set directly into the frame without the use of pressed in cups. - 36/45 degrees is Cane Creek-compatible - 45/45 degrees is Campagnolo-compatible

- No. series headsets offer excellent performance and value - No. 8b: 36x45 degree Cane Creek Integrated, or No. 10: Zero Stack shallow available for 1-1/8" applications - No. 10 S.H.I.S.: ZS44/28.6|ZS44/30 - No. 8B S.H.I.S.: IS42/28.6|IS42/30 - Stack: 5.2mm/3.7mm (No. 10), 8mm/1mm (No. 8B) - Color: Black - Weight: 93g (No. 10), 74g (No. 8B)

- Forged steel cups with caged 5/32" ball bearings - TH-857 features a alloy top cover - TH Series: External Cup, traditional - S.H.I.S.: EC34/28.6|EC34/30 - Stack: 14.9mm/11mm - Color: Black - Weight: 126g

- Bearing Type: Cartridge - Weight: 125g - Crown Race: 40 - S.H.I.S. Lower: ZS56 - S.H.I.S. Upper: ZS44 - S.H.I.S. Stem Clamp Diameter: 28.6 Threadless

- Gyro compatible, 45/45 degree angular contact cartridge bearings, alloy crown race - Impact: 45x45 degree Campagnolo Integrated - S.H.I.S.: IS42/28.6|IS42/30 - Stack: 8mm/1mm - Color: Black, Orange, Red - Weight: 68g

FSA Standard Headset Bearings

A new headset gives you a new lease on life. This is the upper part of an integrated headset for a 44mm headtube. - Lower part of the headset sold separately

- CrMo headset with oversized 3/16" lower ball bearings, 5/32" upper bearings and a nylon top cover - Hammer: External Cup, traditional - S.H.I.S.: EC34/28.6|EC34/30 - Stack: 12.8mm/11.9mm - Color: Black - Weight: 149g