Fox IFP Height Tool

Yes. The IFP depth is critical to the hydraulic function of the post, and it is nearly impossible to set this depth accurately by eye or with standard calipers. Using this tool ensures the piston is positioned exactly to factory specifications, which prevents performance issues like sagging or slow return speeds.

This specific tool is designed for Fox Transfer dropper posts. It is not universal, so you should verify your specific post model and generation before attempting service.

No, this tool is specifically engineered for the internal geometry of the Transfer dropper post. It will not work for setting IFP depths in Fox forks or rear shocks, which require different specialized gauges.

Absolutely. It is built with the same durability standards as other Fox service tools, making it robust enough for repeated use in a home shop or a professional mechanic's setup.

The part numbers 398-00-690 and 398-00-691 correspond to different generations or specific versions of the Transfer post. You should consult the service manual for your specific dropper post model to confirm which part number matches your hardware.