RockShox Rear Air Shock 200 Hour Service Kit The Rockshox Rear Air Shock 200 Hour Service Kit has the needed grease, O-Rings, seals and other gear essential for the maintenance and upkeep of your rear shock. Regular upkeep will keep the rear shock free of stiction and extend the life of your rear shock. Features: Includes air can seals, piston seal, glide rings, IFP Seals, remote spares, lubricating oil, and seal grease Specifications: Compatibility: Trek RE:Active Thru Shaft Deluxe Rear Shock by RockShox