INLET VALVE KIT PSYCHIC MX INCLUDES 2 VALVES 2 SPRINGS RETAINERS & SEATS KAWASAKI KX250F 09-10KIT FEATURES: ALL KITS SOLD WITH VALVE, SPRING, RETAINER, SEAT TO DO COMPLETE REPLACEMENT OF EITHER INTAKE OR EXHAUST SIDE ALL COMPONENTS ARE MANUFACTURED UNDER ISO 9001 CERTIFIED FACTORIES NITRIDE COATED COMPONENTS TO IMPROVE HEAT TRANSER & CARBON BUILD UP FOR INCREASED VALVE TRAIN LIFE VALVE FEATURES: FORGED ONE PIECE CONSTRUCTION TO HELP WITH WEIGHT REDUCTION & IMPROVED FLOW PERFORMANCE VALVES RECEIVE A SWIRL POLISH, SMOOTH STEM TREATMENT, AND ARE