2001-2009 YAMAHA YZ250F Psychic Intake Valve Kit XU-09519IK
$87.99
2001-2009 YAMAHA YZ250F Psychic Intake Valve Kit XU-09519IK
KIT FEATURES:
- All kits sold with valve, spring, retainer, seat to do a complete replacement of either intake or exhaust side
- All components are manufactured under iso 9001 certified factories
- Nitride coated components to improve heat transfer & 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 feature 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 707546 aluminum)
- Designed to work with psychic stainless steel valves and springs