KPMI, valve spring kit. .655" lift. Steel top collars - 84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL (NU) 971491 This is an improved version

This is an improved version of the OEM 16607-57B tappet guide

This enables the builder to virtually place it anywhere on the bike

OEM style replacement for 704 hex head timing & drain plugs and custom style replacement for 720 allen head timing plugs

Many of the old style 4-speed kickstart parts are used for easy access to replacement parts

230 GSM 47% cotton 30% recycled polyester 21% acrylic 2% elastane

KPMI, valve spring kit. .655" lift. Steel top collars - 84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL (NU) 971491 This is an improved versionHigh 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.