RockShox CSU DebonAir

This assembly is specifically designed for RockShox Pike B1-B2 models from 2018-2019 and Pike Select, Select+, and Ultimate B3 models from 2020. Always verify your fork's model year and generation before purchasing, as internal tolerances and steerer tube lengths are specific to these versions.

No, this is a bare Crown Steerer Unit (CSU) assembly. It includes the crown, steerer tube, and upper tubes (stanchions) only, so you will need to transfer your existing air spring, damper, and lower legs over to this new unit.

No, you must match the offset and wheel size exactly to your current fork. This unit is built for 29-inch wheels with a 42mm offset, and using a different specification will alter your bike's handling geometry and may cause clearance issues with your tire.

Replacing a CSU is a significant service task that requires specialized tools, including a fork vice block and a proper press for the headset crown race. If you aren't comfortable with advanced suspension maintenance, it is best to have a professional mechanic perform the swap to ensure the stanchions are seated correctly.

RockShox forks use a press-fit design where the stanchions are permanently bonded to the crown and steerer tube. Because these parts are not designed to be separated or serviced individually, replacing the entire CSU is the only safe and reliable way to fix damaged or worn upper tubes.