Genuine DT Swiss replacement Freehub body. For Sram XD MTB drivetrains. Rear Hub Spacing: 142X12 / 148X12. Bearings: Premium custom made SiNC ceramic bearings. Body Material: Aluminium. Tool free install. Fits Fits Ratchet system hubs as found on DT complete wheels and ratchet 350 hubs, will not fit 3-Pawl hubs.