Yamaha® WR™/YZ™ 400/426 1998 to 2002 on Kibblewhite Precision Machining

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All Categories > Motorcycle Valvetrain Components > Yamaha® Motorcycle Valvetrain Components > Yamaha® WR™/YZ™ 400/426 1998 to 2002


	Yamaha® WR™/YZ™ 400/426 1998 to 2002
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		Lightweight Racing Valve Spring Kits for Yamaha® WR™/YZ™ 400/426 Motorcycle KPMI takes a scientific “System” approach when designing our Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI’s engineers use our proprietary design and simulation softwares, and draw on our 70+ years of design experience to create these systems. Our design, simulation, and manufacturing processes insure compatibility of the valve spring’s force and natural frequency with the cam profile, valvetrain mass, system harmonics, and the engine RPM. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable back to Kobe Japan where some of the best spring ...




		White Diamond® Valves for Yamaha® WR™/YZ™ 400/426 Motorcycle (5) We fully CNC machine our White Diamond Valves from a one-piece forging of either EV8 Stainless Steel or Inconel-751. These materials have proven heat and corrosion resistance properties and are hard chromed with a 360 degree anode to produce the highest possible grade of hard chrome finish.




		Valve Guides for Yamaha® WR™/YZ™ 400/426 Motorcycle (6) We choose to use C63000 nickel bronze as a material to make valve guides because of its ideal characteristics for the application. The 4-5 percent nickel content produces superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity.




		Valve Guide Seals for Yamaha® WR™/YZ™ 400/426 Motorcycle (2) KPMI Red 100% Viton® valve stem seals are designed to have optimum fitment, allow for maximum lift, and to give maximum life. KPMI Red valve stem seals are resistant to high temperatures, petroleum products and the corrosive gasses that are the by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power. The Red Ones are truly the racer’s choice.

Yamaha® YZ™ 450F 2010-2012


	80-80770 Valve Guides for Yamaha® YZ™ 450F 2010-2012 $15.35

	80-80762 Black Diamond® Valves for Yamaha® YZ™ 450F 2010-2012 $31.87
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Yamaha® WR™/YZ™ 450F 2003-2012


	80-80762 Black Diamond® Valves for Yamaha® YZ™ 450F 2010-2012 $31.87

	80-80763 Black Diamond® Valves for Yamaha® YZ™ 450F 2010-2012 $31.87
more available ..