The RockShox Hauptdichtung/Hydraulikschaft Reverb Stealth is a genuine replacement main seal designed specifically for RockShox Reverb Stealth dropper seatposts. Over time, the internal seals of a dropper post are exposed to dirt, moisture, and constant movement, which can lead to small leaks, spongy performance, or a slow return. Replacing the main hydraulic shaft seal with an original RockShox part helps restore smooth, reliable operation and keeps your post performing as intended on demanding rides.
This seal is engineered to match the exact dimensions and materials required for the Reverb Stealth system, ensuring a precise fit and long-lasting durability. It is ideal for riders who regularly service their own suspension components or mechanics looking to offer professional-level maintenance. By renewing the main seal, you improve consistency in seatpost travel, reduce the risk of oil loss, and extend the overall lifespan of your dropper. Pair this part with fresh fluid and a careful service for a noticeable improvement in feel and control on the trail.