Fox Air Shaft Assembly

This specific air shaft is designed for Fox 38mm suspension forks. However, you must verify your specific fork model year and damper type, as internal components can vary significantly between versions.

Replacing the air shaft allows you to change the total travel of your fork. By installing this 160mm shaft, you are setting your fork to that specific travel length, which can alter your bike's geometry and handling characteristics.

If you have experience with suspension service and the correct tools—including a torque wrench and suspension fluid—it is a manageable task. If you are not comfortable working with pressurized air springs or internal seals, it is safer to have a professional mechanic perform the installation.

This kit typically includes the air shaft assembly itself. You will likely need to purchase the appropriate Fox suspension fluid and a seal kit separately to complete a full service during the installation.

Signs of a worn air shaft often include a loss of air pressure, a 'sucking down' feeling where the fork doesn't fully extend, or a harsh, inconsistent feel during compression. If you notice these symptoms, a rebuild or shaft replacement is usually required.