Race Face Bosch G4 spider/hardware, 52mm offset

This spider is only compatible with the Bosch Performance Line CX Gen4 motor. Any RF 1x 104BCD ring will mount securely with the included hardware – including the new SHI-12 speed rings.

Features

Works with Race Face eBike cranks on Bosch Gen4 CX motors.
104mm BCD.
Compatible With: 104BCD rings, 9/10/11/12 speed.