SPRING VALVE KIT, XR500/600, KIBBLEWHITE 30-4081, 460 LIFT

This high-performance valve spring-only kit is designed for various Honda® motorcycle applications, supporting up to 0.465" valve lift. Engineered using advanced design and simulation software, the springs are manufactured from premium chrome-silicon wire, providing excellent fatigue life, stress tolerance, and consistent performance. This kit is suitable for both intake and exhaust applications and is compatible with a wide range of off-road and dual-sport models.

Features

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  Designed for high-performance applications with 0.465" valve lift capacity

  
  


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  Manufactured from Super-Clean Chrome-Silicon wire from Kobe, Japan

  
  


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  Engineered using proprietary design and simulation software

  
  


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  Undergoes heat treatment, stress relief, and shot peening for durability

  
  


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  Manufactured in ISO-certified U.S. facilities

  
  


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  Suitable for both intake and exhaust valves

  
  

Specifications

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  Valve Lift: 0.465"

  
  


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  Installed Height: 1.210"

  
  


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  Seat Pressure: 75#

  
  


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  Open Pressure: 210# @ 0.465" lift

  
  


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  Type: Intake / Exhaust

  
  


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  Material: Various

  
  

Cross-Reference OEM Part Numbers

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  Kibblewhite Part No. 30-4081

  
  

Vehicle Fitments

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  Honda GB500 1989–1990

  
  


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  Honda XR500R 1983–1984

  
  


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  Honda XL600R 1983–1987

  
  


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  Honda XR600R 1985–2000

  
  


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  Honda XR650L 1993–2018