Shimano FHMT500 - 12 Speed - 32H - QR 135mm
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Product Information
Full details
The Shimano FHMT500 is a robust, performance-oriented rear hub designed for mountain bikers looking to upgrade to a 12-speed drivetrain. It is ideal for riders seeking efficient power transfer and reliable weather protection through its double-contact sealing system. While it offers excellent engagement and durability, it is important to note that it is specifically engineered for 12-speed Shimano MICRO SPLINE cassettes and requires a 135mm quick-release frame configuration, making it incompatible with older drivetrain standards or thru-axle frames.
All features
| Model Part Number | FHMT500 |
|---|---|
| Brand | SHIMANO |
Extended Product Information
FAQs
Does this hub work with my 11-speed cassette?
No, the FHMT500 uses a MICRO SPLINE freehub body, which is exclusively designed for Shimano 12-speed cassettes.
Can I use this with a thru-axle frame?
No, this specific model is designed for a 135mm quick-release axle system.
What type of disc rotors can I use?
This hub is compatible with Shimano Centre Lock disc rotors.
How often should I service the bearings?
Service intervals depend on usage conditions, but the hub's double-contact seals are designed to minimize maintenance needs in most trail environments.
Is the freehub body replaceable?
Yes, the freehub system can be serviced or replaced if it wears out over time.
Troubleshooting
Cassette feels loose or wobbly
Ensure the MICRO SPLINE lockring is tightened to the recommended torque specification.
Grinding noise while coasting
The seals may have trapped dirt; wipe the area clean and check if debris has compromised the seal.
Poor power transfer/slippage
Verify that the pawls are engaging properly and that the freehub body is fully seated in the hub shell.
Pros and Cons
Pros
- Reliable 10-degree pawl engagement
- Excellent weather protection for bearings
- Efficient power delivery with 10T sprocket compatibility
- Straightforward Center Lock rotor mounting
Cons
- Requires specific MICRO SPLINE compatible cassettes
- Limited to 135mm QR frame standards
- Not compatible with older 11-speed or HG freehub bodies
Setup, Compatibility & Care
To ensure proper function, the FHMT500 requires a frame with 135mm Quick Release spacing and a 12-speed drivetrain using a Shimano MICRO SPLINE cassette. When installing the Centre Lock disc rotor, ensure the lockring is tightened to the manufacturer's specified torque rating using a standard cassette tool. For maintenance, periodically wipe the exterior of the hub body to prevent debris buildup. Because the internal bearings are shielded by double-contact seals, avoid using high-pressure water spray directly at the hub seals during cleaning to prevent forcing contaminants inside. If the hub begins to feel gritty, the internal grease sleeve can be serviced by a professional mechanic to refresh the lubricant.