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Leisure Lakes Bikes£36.99Visit shop Shimano Deore FH-M525 6 Bolt Disc Freehub Black
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The Shimano Deore FH-M525 is a robust, disc-compatible rear hub designed for mountain bikers and commuters seeking a reliable, low-maintenance drivetrain component. It offers exceptionally smooth rotation through its specialized bearing treatments and provides excellent stopping power integration via its 6-bolt disc rotor mount; however, users should note that it is strictly limited to 8- and 9-speed drivetrain configurations, making it incompatible with modern 10, 11, or 12-speed systems.
| Model Part Number | FHM525AZL |
|---|---|
| Brand | Shimano |
No, the FH-M525 freehub body is specifically designed for 8- and 9-speed Shimano or SRAM compatible cassettes.
No, this hub is exclusively designed for 6-bolt disc rotors. You would need a 6-bolt to centerlock adapter or simply use standard 6-bolt rotors.
For regular recreational riding, cleaning and repacking the bearings once per season is generally sufficient. More frequent service is recommended if riding in wet or muddy conditions.
Yes, the product includes a lightweight alloy quick-release skewer.
Borozon treatment is a specialized process that hardens and polishes the bearing surfaces to significantly reduce friction, leading to a smoother feel and greater longevity.
The cup-and-cone bearings require adjustment. Loosen the locknut and tighten the cone slightly until play is eliminated while maintaining smooth rotation.
The internal grease may be contaminated or dry. Disassemble the hub, clean the bearing races, inspect for pitting, and repack with high-quality bicycle-specific bearing grease.
Verify the 6-bolt mounting hardware is torqued correctly and that the hub is fully seated in the frame dropouts before tightening the quick-release skewer.
For optimal performance, ensure the hub is laced into a wheelset that matches your bike's dropout spacing and brake setup. The FH-M525 is designed specifically for 8- and 9-speed cassettes. When installing, use a thin film of waterproof grease on the axle threads. Maintenance should involve cleaning the exterior with a soft brush and water—avoid high-pressure jets directly at the hub seals. Regularly check the quick-release tension to ensure the hub is securely seated in the frame dropouts to prevent lateral play.
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