In an era where Shimano HG and SRAM XDR drivetrain standards coexist, compatibility issues often complicate upgrades. RUJIXU introduces its next-generation road straight-pull hub, featuring an interchangeable freehub system that allows a single hub body to seamlessly work with both Shimano HG and SRAM XDR cassettes—the ultimate “one-core-fits-both" solution.
Unlike traditional pawl-and-spring systems, this hub employs a DT Swiss-style star ratchet system, where two precision-toothed rings engage to transfer power. Its advantages are clear:
Larger Engagement Area: Full-face contact distributes force evenly, handling high torque with exceptional durability.
Effortless Maintenance: The ratchet can be easily serviced by simply removing the axle, requiring no special tools.
Smoother Operation: Lower friction during engagement and smoother freewheeling.
Unmatched Compatibility: Switch between Shimano and SRAM 11-12 speed systems by swapping the freehub body.
Optimized Weight: The straight-pull design contributes to a light build, with the XDR version weighing approximately 232 grams (front hub ~210g).
Modern Spec Ready: Native 12x100/142mm thru-axle and Center Lock disc brake compatibility for contemporary race bikes.
