Ohlins service kits help in retaining optimal performance of all versions of the TTX22m rear shock.Simplified 100-hour service kit for all versions of the TTX22mIncludes the one-piece seal head assembly, nitrogen bladder, and new m.2-spec BASF bump rubber (retrofittable to older versions.)Requires the use of a vacuum-fill machine and an Ohlins-specific Nitrogen fill needle Ohlins TTX22m Rear Shock Service Kit Rear Shock Service Kits UPC: 719676680385