Fox 36 CSU

This specific CSU (part number 820-12-892-KIT) is designed for the 2026 model year Fox 36. Because suspension standards and steerer tube interfaces change frequently, we strongly recommend verifying your fork's specific serial number on the Fox Help Center website before purchasing to ensure compatibility.

Yes, this is a complete Crown-Steerer-Unit (CSU) assembly. It arrives with the crown, steerer tube, and upper stanchion tubes pre-assembled and pressed together as a single, factory-aligned unit.

The signature Kashima coating is more than just an aesthetic choice; it is a hard-anodized treatment that significantly reduces friction between the stanchions and the fork seals. This results in smoother, more responsive suspension travel and improved durability against wear over time.

While this CSU has a 44mm offset, you cannot change your fork's offset simply by swapping the CSU if the lower legs are not designed to accommodate that specific geometry. The offset is determined by the combination of the crown and the lower leg design, so you should stick to the offset specified for your original fork chassis.

Replacing a CSU is a significant service task that requires specialized tools, including a crown race setter and potentially a steerer tube cutter. If you are not comfortable performing a full fork teardown and rebuild, it is best to have this installed by a professional suspension technician to ensure safety and proper alignment.