RockShox Rear Shock Tune Assembly Description: This RockShox Rear Shock Tune Assembly includes service parts for the adjustment of compression on select RockShox rear shocks. Features: Replacement shock part kits for servicing RockShox rear shocks (pre 2008 oil-damper units are non-serviceable) Includes seal, bushing, O-ring, shims, and bottom-out/negative bumpers Includes shims for compression tune configurations Specifications: Compatibility: Deluxe Air (C1)