The BlackBearing B1 headset is designed for frames equipped with a 1"1/8 pivot fork. Its 2RS double lip system ensures optimal sealing against moisture and dust for increased durability, while offering low friction.It is necessary to measure the dimensions of the bearing you want to replace with a caliper to ensure that the BlackBearing B1 bearing is compatible with your bike, while also taking the angle into account.

- Steel bearing
- 2RS seals: double lip, long-lasting performance with less friction
- International reference: TK410
- High-quality "abec 5" balls
- Bearing height: 7 mm
- Internal bearing diameter: 30.15 mm
- External bearing diameter: 41 mm
- Angle: 45° internal, 45° external
- For 1"/8 fork pivot