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
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
FSA ACR (Aerodynamic Cable Routing) Headsets are suitable for both road and MTB riding styles and feature angular contact bearings.
- A fully integrated cable routing
- No rotation limit
- ACR top cover
- Angular contact bearing
- Specific frame required
- 1.5" headtube
- 36°/45° ACB
- For 55.8mm OD headtube
- For 1-1/8" to 1.5" tapered fork
- Stack height 10.4+0.5=10.9
A solid choice for 1-1/8in frames, the Orbit Equipe features a sturdy steel lower cup for maximum durability. The top cup is forged alloy, with an alloy top cover. Inside are two low maintenance, easy-to-replace sealed cartridge angular contact bearings.
- Bearing Type: Cartridge
- Weight: 117g
- Crown Race: 30
- S.H.I.S. Lower: EC34
- S.H.I.S. Upper: EC34
- S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
The lightweight Orbit UF uses a mixture of bearing types, with caged ball bearings in the top race and sealed cartridge angular contact bearings in the bottom race. Upper and lower water seals keep the elements at bay.
- Forged and CNC machined 6061/T6 Aluminum cups
- Patented alignment tip for increased durability and performance
- Upper cup uses double sealed 5/32" ball bearings
- Lower cup uses a black seal angular contact bearing
- Laser etched aluminum top cap
- Weight: 99g
- Crown Race: 30
- S.H.I.S. Lower: EC34
- S.H.I.S. Upper: EC34
- S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
The FSA Orbit X threadless headset is constructed of aluminum and features sealed cartridge bearings.
- Classic shape with modern styling for high-end road bikes
- For threadless steerers
- Forged and CNC machined 6061/T6 aluminum cups
- Patented alignment tip for increased durability and performance
- TH brand 36-degree Micro Angular Contact Bearings (red seal)
- Laser etched aluminum top cap
- Weight: 82g
The FSA Orbit Xtreme Pro threadless headset is constructed of forged and CNC machined 7075/T6 aluminum cups.
- Stainless steel Angular Contact Bearings
- Stainless steel crown race
- 1.5'' patented alignment tip for increased durability and performance
- Deep Cup model has 22mm insertion of upper and lower cups