Kibblewhite
KPMI, valve spring kit. .600" lift. Aluminum top collars
KPMI, valve spring kit. .600" lift. Aluminum top collars
Couldn't load pickup availability
Reduces total valve train mass. Great for high lift racing performance builds. The springs are manufactured from the highest quality clean chrome silicone wire; shot peened and heat treated for maximum fatigue life. Kit includes springs; upper collars; lower collars; and valve keys. Max valve lift: .600". Installed height: 1.510". Seat pressure 152 lbs. Open pressure: 387 lbs. @ .600" valve lift. Note: Does not include valve guide seals.
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Why buy from Forty5°
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Verified compatibility
Every part we ship is checked against your bike's platform, year, and engine. If it doesn't fit, we tell you before you check out.
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Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
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Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp seven days a week.