Which parts are needed to change BoXXer’s travel? Changing BoXXer’s travel requires a new air spring shaft, which is available to purchase aftermarket. Related articles What size tokens does the BoXXer use? What are the travel options for BoXXer? Why are there lines on BoXXer’s upper tubes? Are any technologies in the new BoXXer compatible with previous generations? How do I change travel in my RockShox fork?