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KPMI, valve spring kit. .655" lift. Steel top collars

Product code: 524513
Sale price£248.09

Availability: Out of stock
Estimated supplier restock: 28 November 2026 Supplier estimate, subject to change. Delivery time is additional once stock arrives.

The details that matter

Details

Description

High lift high pressure spring kit. Reduces total valve train mass. Great for high performance & racing performance builds. The dual springs are manufactured from the highest quality clean chrome silicone wire, shot peened and heat treated for maximum fatigue life. Kit includes dual springs with internal damper to give a wider range of harmonic reduction, upper collars, lower collars, valve keys and seals. Max valve lift: .655". Installed height: 1.810". Seat pressure 185 lbs. Open pressure: 450 lbs. @ .655" valve lift.

Specifications

Unit KIT

Fitment

84-99 Evo Big Twin; 99-04 Twin Cam; 86-03 XL Sportster (NU)

Part numbers

Supplier SKU 524513
Manufacturer part 20-20081

Specifications

BrandKibblewhite
CategoryValve springs

Fitment

Part numbers

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