FSA IS42 Top Bearing 1-1/8"

The FSA Premium Orbit C No.8 Upper Drop-In headset is an integrated IS42/28.6 top assembly designed for 1-1/8" steerer tubes. It uses fully sealed 45°x45° stainless steel micro angular contact bearings, giving smoother rotation, higher stiffness, and long-term durability. The 7075-aluminium dust cover provides a clean, secure interface while protecting the bearing from dirt and moisture. Suitable for frames with a 42 mm upper headtube inner diameter.

Specifications
Model: FSA Orbit C No.8 Upper
Type: Integrated headset – Upper drop-in
Standard: IS42/28.6
Steerer Size: 1-1/8"
Bearing: Sealed stainless 45°x45° micro ACB
Dust Cover Material: 7075 aluminium
Frame Compatibility: 42 mm inner diameter (upper headtube)