Kibblewhite
KPMI, valve spring kit. .600" lift. Aluminum top collars
KPMI, valve spring kit. .600" lift. Aluminum top collars
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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.