Yamaha YZ450F 2003 - 2009 Psychic Steel Exhaust Valve Spring & Retainer Kit

PSYCHIC VALVE & SPRING REPLACEMENT KITS

Quality is very important to us, but it has it's price. The steel valves offer increased durability and easily extends 3 times the lifespan of the OEM Titanium valves. Due to the extra weight of the steel a heavier valve spring must be used! Psychic has developed the Steel Intake and Exhaust Valve & Spring Kits, containing a set of steel intake or exhaust valves plus a set of specially designed stronger valve springs. The Psychic kit juts replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seats.

FEATURES:

• Steel valves for increased durability and less wear under extreme conditions
• Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide
• Special stronger valve springs deal with the extra weight of the steel valves
• Spring are made from premium Chrome Vanadium Steel for higher performance and durability under high RPM
• Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications
• Comes as complete package for quick, easy and cost efficient replacement

Fitment Details

• Yamaha YZ450F 2003
• Yamaha YZ450F 2004
• Yamaha YZ450F 2005
• Yamaha YZ450F 2006
• Yamaha YZ450F 2007
• Yamaha YZ450F 2008
• Yamaha YZ450F 2009