RockShox Reba B1 Assembly

This assembly is specifically designed for the RockShox Reba B1 platform. Before purchasing, verify your fork's exact model year and chassis type, as internal parts are often specific to certain generations and travel lengths.

This assembly is sized for a specific travel length, which is 130 mm. If you are looking to change your fork's travel, you will need the specific air shaft assembly corresponding to that desired travel length, not just this component.

Replacing an air spring is a moderate task that requires basic suspension tools, including a socket set, a torque wrench, and suspension-specific grease. If you are comfortable performing a lower-leg service, you should be able to handle this, but refer to the official RockShox service manual for your specific fork model before starting.

You should consider replacing your air spring if you notice your fork is losing air pressure over a ride, feels harsh or inconsistent, or if you experience 'stiction' that persists even after a fresh lower-leg service. These symptoms often indicate worn seals or a damaged air shaft.

Yes, it is highly recommended. Since you are already opening the fork to replace the air spring, you should take the opportunity to clean the internals, replace the wiper seals, and refresh the suspension fluid to ensure the new assembly performs as intended.