Specifications
Threaded lockring that secures the chainring spider to the spider mount on Brose Alu and Brose Mag motors.
- Dimensions: Right-hand thread (M31 x 1.0mm Pitch)
- Tool Interface: Park Tool BBT-18, Shimano TL-UN98, or equivalent tool
- Torque: 40 Nm / 354 in-lbf