The Shimano FH-QB400-HM Freehub is built to meet the demands of trekking and city cyclists who seek long-lasting performance and easy maintenance. It offers consistent reliability in both urban commutes and longer touring rides. Designed for 6-Bolt Disc Brake Systems: Compatible with 6-bolt disc brake setups, this freehub ensures stable braking and confident handling across varying conditions. Its design fits seamlessly into a wide range of disc-equipped frames, offering dependable stopping power. Smooth Compatibility Across Speed Systems: This freehub supports 11-speed down to 8-speed drivetrains, making it a versatile choice for different gearing setups. Whether you're running an 11-speed drivetrain or a classic 9-speed system, it integrates smoothly without compromise. Durable Sealing and Hub Construction: A high-quality internal seal prevents dirt and moisture from entering, extending the service life of the bearings and internal components. The construction emphasizes durability while keeping maintenance straightforward. Designed with a 135 mm over-locknut dimension, the FH-QB400-HM fits most standard quick-release rear frames. Compatible with both #13 and #14 spokes, it offers flexibility in wheel building and replacement.