The RockShox Solo Air Top Cap SID (B1) is a genuine replacement part designed specifically for RockShox SID forks using the Solo Air spring system. Whether you are refreshing a well-ridden fork or repairing damage from a hard season of riding, this top cap helps restore smooth, consistent air spring performance. Using original RockShox hardware ensures proper fit, reliable sealing, and compatibility with your existing Solo Air internals, so you can maintain the precise feel and adjustability that SID forks are known for on demanding XC and trail rides.
Ideal for home mechanics and professional workshops alike, the RockShox Solo Air Top Cap SID (B1) is a key component when performing air spring service or upgrades. Replacing worn or damaged top caps can improve air retention, make pressure adjustments more accurate, and extend the life of your suspension. Pair this part with fresh seals and appropriate suspension fluid as part of a regular maintenance routine to keep your fork responsive, efficient, and ready for race day or long days on technical singletrack.