VintCo has all new Fox Air Shock Piston kits to help you keep the ride going Air Shock Piston kit is made with modern materials and manufacturing techniques to ensure an as good or better fitment to the original Fox Air Shocks Kit replaces the VintCo or original Fox air shock piston Kit works with all lengths of Air Shocks and includes one piston and one ring One kit will work for one shock (order two if rebuilding two shocks) Every rebuild part is available for your Fox Air Shocks at VintCo Replacement Shock Piston Kit For All Fox & VintCo Air Shocks 1 Shock Piston 1 Shock Piston Ring 1 Kit will rebuild 1 shock. SHOCK PISTON KIT