ProX Yamaha YFZ450R YFZ 450R 2009-2017 Steel Exhaust Valve & Spring Upgrade Kit

ProX Steel Exhaust Valve Upgrade Kit (28.SES2424-1)

Bike Fitment:

• Yamaha YFZ 450R 2009
• Yamaha YFZ 450R 2010
• Yamaha YFZ 450R 2011
• Yamaha YFZ 450R 2012
• Yamaha YFZ 450R 2013
• Yamaha YFZ 450R 2014
• Yamaha YFZ 450R 2015
• Yamaha YFZ 450R 2016
• Yamaha YFZ 450R 2017

Specifications:

• This ProX kit includes steel valves for increased durability and less wear under extreme conditions.
• Nitrided valves offer high microhardness while a super smooth finish reduces friction between stem and guide.
• The valves are accompanied by stronger valve springs that deal with the extra weight of the steel valves.
• Springs are made from premium Chrome Vanadium Steel for high performance and durability under high RPM.
• Fully compatible with OEM retainers, bases and seals without the need of any further engine modifications.
• Comes as a complete package for quick, easy and cost effective solution.