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Kibblewhite Racing Valve Spring Kit .440 Inch Lift For KTM 400-560 RFS 2000-2009

Kibblewhite Exhaust Item #946132
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Guaranteed Lowest Price! Call Us Sale: $181.00
  • MPN: 96-96000
  • Color: N/A
  • Size: One Size


KPMI takes a scientific "System" approach when designing their Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI's engineers use their proprietary design and simulation softwares, and draw on their 70+ years of design experience to create these systems. Kibblewhite's design, simulation, and manufacturing processes insure compatibility of the valve spring's force and natural frequency with the cam profile, valve train mass, system harmonics, and the engine RPM. Their spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire used 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, allows Kibblewhite to supply you with the best valve springs in the world.


  • 0.440" Valve Lift OK 40 lb. Seat Pressure/195 lb. at .400" lift
  • Set contains springs and titanium upper collars and lower collars as required
  • Kit sold complete for one motor
  • Fits the following KTM models for motorcycles:
  • 400 SX RFS 2002
  • 450 SX Racing RFS 2003
  • 400 EXC RFS 2004-2005
  • 450 EXC RFS 2004-2005
  • 450 MXC RFS 2004-2005
  • 450 SX RFS 2004
  • 525 EXC RFS 2004-2005
  • 525 MXC RFS 2004-2005
  • Fits the following Yamaha models for ATV/UTV:
  • 400 SX RFS ATV 2002
  • 450 SX Racing ATV RFS 2003
  • 400 EXC RFS ATV 2004-2005
  • 450 EXC RFS ATV 2004-2005
  • 450 MXC RFS ATV 2004-2005
  • 450 SX RFS ATV 2004
  • 525 EXC RFS ATV 2004-2005
  • 525 MXC RFS ATV 2004-2005
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WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
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