- Description
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Details
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 software, 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.
Kibblewhite 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 wire in the world is manufactured. Combining their design and simulation protocols with this premium quality valve spring wire, and manufacturing processes including, heat treatment, stress relief, and shot peening, allow us to supply you with the best valve springs in the world.
Additional Information
Specification Details Pressure At Lift 230 lbs. at .500" Seat Pressure 100 lbs. Spring Material Chrome Silicon Included Keepers H.T. Steel Included Lower Collars H.T. Steel Included Retainers Titanium Max Lift .525" SKU 80-80340 Brand Kibblewhite Fitment Information
Yamaha Models
- Yamaha XS650 1975 - 1981
- Yamaha XS650 Twin 1976
- Yamaha XS650S Heritage 1982
- Yamaha XS650S Heritage Special 1983
- Yamaha XS650S Special 1978 - 1983
- Yamaha XS650S2 Special II 1979
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- Fitment Information
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Fitment Information
Yamaha Models
- Yamaha XS650 1975 - 1981
- Yamaha XS650 Twin 1976
- Yamaha XS650S Heritage 1982
- Yamaha XS650S Heritage Special 1983
- Yamaha XS650S Special 1978 - 1983
- Yamaha XS650S2 Special II 1979
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Product Questions
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