Fox Suspension Top Cap Assembly

This specific assembly is designed for 2020 Fox 34 FIT4 forks with a remote lockout and 3-position compression adjustment. Before purchasing, verify your fork's model year, stanchion diameter, and damper type to ensure it matches the '2020 34 FIT4' specification exactly.

No, this is strictly the top cap assembly that sits on the fork crown. It does not include the remote lever, cable, or housing required to actuate the lockout.

If you have experience with suspension service and the correct tools—specifically a high-quality socket for the top cap and a torque wrench—you can likely perform this swap yourself. If you are unsure about damper service or internal pressure, it is safer to have a professional shop handle the installation to avoid damaging the damper internals.

The top cap assembly is often replaced if the compression adjustment dial has become seized, the remote actuation mechanism is worn out, or if the seals have failed and are causing oil leaks. Replacing the entire assembly is usually the most efficient way to restore factory-level performance when these small, intricate parts wear down.

It depends on the cause. If the issue is purely mechanical—such as a stripped dial or a broken spring inside the top cap—this assembly will likely solve the problem. However, if the lockout failure is due to an issue deeper within the damper cartridge, replacing the top cap alone may not restore full functionality.