DT-Swiss 240 EXP CL-Disc Rear Hub The cult-classic The DT Swiss 240 is a phenomenal hub that offers industry leading performance and reliability. With lightning quick and upgradeable engagement you'll be able to quickly leap from the startline. The Ratchet EXP system is an extremely efficient and reliable system that uses fewer moving parts than other ratchet designs. The full engagement ratchet design creates a large contact surface that overall reduces surface pressure. Easily replaceable long lasting stainless steel bearings keep the DT Swiss 240 hub spinning smooth for years to come. Increased bearing distance further increases the longevity of the bearings. Features Lightning fast engagement is perfect for tackling technical terrain Comes with a 36t ratchet engagement with a 54t upgrade available (HU205Z02)Ratchet EXP is incredibly reliable and efficient Stainless steel bearings are long lasting and easy to replace Multiple hub configurations for every bike and drivetrain Lightweight hub design saves weight without compromising on durability SPECIFICATIONSHub Size12x148mm, 12x157Spoke Interface J-Bend Hub Drilling28, 32h Brake Type Centerlock Cassette Compatibility Shimano 12-Speed Microspline, SRAM XD | Dt Swiss | 240 Exp Cl-Disc Rear Hub 28H, 12X148Mm, Xd