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KPMI, Beehive valve spring kit. Steel. .610" lift

With steel top & lower collars. Reduces total valve train mass. Reduces total valve train mass. Great for stock & moderate performance builds. The one-piece Beehive style springs are manufactured from the highest quality clean chrome silicone wire, shot peened and heat treated for maximum fatigue life. Kit includes steel upper collars, lower collars and valve keys. Works with stock 7/16" valve stems. Max valve lift: .610". Installed height: 1.860". Seat pressure 175 lbs. Open pressure: 400 lbs. @ .610" valve lift. Note: Does not include valve guide seals.

Fits: > 84-04 Big Twin; 86-03 XL Sportster (NU)

Fits: >

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