INLET VALVE KIT PSYCHIC MX INCLUDES 2 VALVES, 2 SPRINGS, RETAINERS & SEATS YAMAHA YZ450F 14-17

KIT 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 MADE OF 21-2N/SUH35HT STAINLESS STEEL SPRING FEATURES: - SPRINGS ARE MADE OF SWOSC-V MATERIAL (OIL-TEMPERED STEEL WIRE) - SOME SPRINGS FEARTURE A PROGRESSIVE STYLE DESIGN WITH MORE COILS ON ONE END OF THE SPRING - PROGRESSIVE SPRINGS ARE HEAVIER ON ONE END AND SHOULD ALWAYS BE INSTALLED TOWARDS THE BOTTOM - NON-PROGRESSIVE SPRINGS ARE PAINT MARKED AND SHOULD BE INSTALLED TOWARDS THE TOP SEATS & RETAINERS: - MADE FROM 4041 STEEL (SELECT APPLICATIONS USE 7075-T6 ALUMINUM) - DESIGNED TO WORK WITH PSYCHIC STAINLESS STEEL VALVES AND SPRINGS Inlet Valve Kit Psychic MX includes 2 valves, 2 Springs, Retainers & Seats Yamaha YZ450F 14-17