FSA HG Freehub

This freehub is designed specifically for FSA PRA hubs that are designated as 'Non-SL.' It is not compatible with SL-series hubs or other hub brands, so please verify the specific model name on your hub shell before purchasing.

Yes, this is a standard Shimano HG (HyperGlide) freehub body. It is compatible with most Shimano and SRAM 8, 9, 10, and 11-speed mountain and road cassettes.

Replacing a freehub body is a moderate task that typically requires a cassette tool, a chain whip, and the appropriate hex or cone wrenches for your specific hub. If you are comfortable removing your cassette and accessing the hub internals, it is a straightforward swap.

In most cases, you should not need to re-index your gears, provided the new freehub is identical to the old one. However, it is good practice to check your derailleur alignment and limit screws after any drivetrain maintenance to ensure smooth shifting.

Common indicators include a gritty or 'crunchy' feeling when coasting, excessive play or wobble in the cassette, or the pawls failing to engage properly when you pedal. If you notice these symptoms, replacing the freehub body is often the most effective fix.