The Crankbrothers Synthesis Freehub Body XD Steel Driver is a dependable replacement for I9 and Crankbrothers hubs, compatible with I9 Hydra, I9 1/1, and Crankbrothers Ratchet models. It supports both SRAM XD and Shimano drivetrains. Made from durable steel, it promises long-lasting performance, and the included drive side end makes installation straightforward. Enhance your bike's drivetrain reliability and efficiency with this essential component. SKU: 16503.