ROTOR's RVOLVER system with SRAM XDR free hub body for disc brake bicycles. The innovative design features a sliding clutch system that disengages the ring from the pawls while coasting to reduce friction. When you resume pedaling, the ratchet ring re-engages to deliver an instant power transfer.
Weight: DISC IS J-bend: 255 g / DISC CL Straight Pull: 245g
Holes Number: 24H
Axle version: 142 mm Thru Axle
Free-hub body type: SRAM XDR
Spoke type flange: J-Bend special design and Straight Pull
Disc Mount system: I.S. (6 bolts) and Centerlock interface
Bearings: 6803 / 6902
Compatible with SRAM XDR 12s