RockShox BoXXer Air Spring Upgrade Kit

This specific upgrade kit is designed exclusively for BoXXer C1 models from 2019 and newer. It will not be compatible with older versions of the fork.

You will notice a more supple feel at the beginning of the fork's travel, which improves small-bump sensitivity and traction. Additionally, the kit provides better support in the mid-stroke, preventing the fork from diving too deep during aggressive riding or heavy braking.

If you are comfortable performing a standard lower leg service and air spring replacement, you can likely handle this installation. You will need basic suspension tools, fresh suspension oil, and the appropriate grease for the air seals.

No, this kit is designed to maintain the 200mm travel of your BoXXer fork while upgrading the internal air spring technology. It focuses on ride quality rather than altering the travel length.

Yes, because the internal volume and spring curve are different from the stock setup, you should reset your sag and air pressure. Plan to spend some time on your first ride dialing in your pressures to match the new, more supportive feel.