Hub rear D902SB-CL-X12-A4A-MS, Centerlock, polished anodized black, 32H/14G, Alloy axle 12x142, w/o QR, DH27.9/D39.7, 5xNBK bearings, Ratchet Ring 40T, Shim. Micro Spline, H-TYPE (404 system) cassette body (E440), 4-PAWLS, black side caps, with Novatec lasered logo, OEM