VALVE SPRING SET KX450F 09-16, KIBBLEWHITE 40-40660

This titanium racing spring kit is designed for Kawasaki KX450F models from 2009 to 2016, supporting valve lifts up to 0.415" (10.54 mm). The kit features high-quality chrome silicon valve springs, titanium retainers, and is engineered for durability under extreme conditions. It offers specific pressure ratings for intake and exhaust applications, delivering consistent performance in high-revving four-stroke engines.

Features

• 
  

  Chrome silicon valve springs

  
  


• 
  

  Titanium retainers for reduced valvetrain mass

  
  


• 
  

  Designed for up to 0.415" valve lift (10.54 mm)

  
  


• 
  

  Application-specific engineering for intake and exhaust valves

  
  

Specifications

• 
  

  Exhaust: 0.440" valve lift OK, 70 lb seat pressure, 183 lb @ 0.375" lift

  
  


• 
  

  Intake: 0.440" valve lift OK, 40 lb seat pressure, 130 lb @ 0.375" lift

  
  

Cross-Reference OEM Part Numbers

• 
  

  Kibblewhite #30-31600

  
  

Vehicle Fitments

• 
  

  Kawasaki KX450F 2009–2016