KIBBLEWHITE Valve Spring Kit - Rocker Shim Conversion - Dual Springs - Titanium Retainers - M8 20-23400

Valve Spring Kit - Rocker Shim Conversion - Dual Springs - Titanium Retainers - M8
Designed for maximum performance, Features interference-wound, double-chrome silicone springs; heat-treated steel base washers, All spring kits should be used together, Available in a complete set for one engine, Made in the USA, Modification necessary to maximize shim contact, KPMI recommends "tipping" (shortening the valve tip)., There is anticipated to be a rough 0.100" increase in effective stem protrusion with the use of the shim., This system must be run with KPMI's newer style M8 valve guides, which are shortened for 0.675" valve lift.