The Shimano FH-QC500-MS-B rear freehub is designed to deliver dependable performance on demanding trails. Engineered for 12-speed Micro Spline cassettes, it ensures smooth and precise gear engagement, offering a solid foundation for high-performance riding across all terrains. Center Lock Disc Compatibility for Easy Setup: This hub features a Center Lock disc brake mount, allowing for quick and secure rotor installation using a spline interface and lock ring. The system minimizes installation time and enhances braking consistency, making it a favorite for riders seeking simplicity without compromising braking efficiency. Micro Spline for Wide Gear Range: With its smaller spline diameter, the hub accommodates a 10T top gear, allowing for broader gearing options in compact formats. This makes it ideal for modern 1x drivetrains that demand wide-range cassettes and high-efficiency setups, especially in off-road and mountain biking applications. Durability Through Smart Sealing: Shimano’s Labyrinth and Contact Sealing system ensures long-term durability by keeping out dirt, water and grime. These advanced seals maintain smooth hub performance even in wet and muddy environments, reducing maintenance and extending the life of internal components. Broad Spoke Compatibility: It is compatible with both #13 and #14 gauge spokes, offering versatility for custom wheel builds and replacements on a wide range of bikes. Built with a 141 mm O.L.D. Boost spacing, the Shimano FH-QC500-MS-B Rear Freehub provides enhanced wheel stiffness and frame clearance.