The RockShox Solo Air Einheit SID XX/RL (B1) is a genuine RockShox air spring unit designed specifically for SID XX and SID RL forks of the B1 generation. As the heart of your fork’s suspension, the Solo Air unit is responsible for creating that smooth, controlled feel on the trail, allowing you to fine-tune air pressure for your weight and riding style. Replacing a worn or damaged air spring with an original RockShox unit restores performance, improves small-bump sensitivity, and helps maintain consistent support through the entire travel.
This RockShox Solo Air Einheit is ideal for riders who want to service their own suspension and keep their fork running like new. Whether you are refreshing an older SID or repairing a fork that has lost air or feels inconsistent, this unit offers a reliable, model-specific solution. Using original RockShox parts ensures proper fit, compatibility with the existing damper, and long-term durability. Pair it with fresh seals and oil during your next service to get the most out of your SID fork on cross-country loops, marathon races, or fast after-work rides.