Fox Suspension Spool Valve Compressor Knob

This knob is specifically designed for Fox Transfer and Race Face Turbine-R dropper seatposts. It is not a universal part, so please verify your specific post model before purchasing.

While the knob itself is a direct replacement, you will likely need standard shop tools, such as a pick set or small wrenches, to access and service the internal spool valve assembly. Always refer to the official service manual for your specific dropper post model to ensure you have the correct tools on hand.

No, this knob is for internal valve maintenance and actuation troubleshooting, not for adjusting the air pressure of the seatpost. Air pressure adjustments are typically handled via the Schrader valve located under the saddle clamp.

You generally only need to replace this part if the original knob has become damaged, stripped, or lost during a service procedure. If your dropper post is functioning correctly, there is no need to replace this component.

Compatibility can vary by generation. This part is intended for standard Fox Transfer and Race Face Turbine-R systems, but we recommend checking your post's serial number against the manufacturer's parts diagram to confirm it matches your specific revision.