Psychic Mx XU-09509EK Exhaust Valve Kit

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 buildup 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.

Vehicle Fitment:

2004-2016 Kawasaki KX250F
2004-2006 Suzuki RM-Z250
2001-2009 Yamaha WR250F
2001-2009 Yamaha YZ250F