Rocker shim thickness can be varied by changing shim size to adjust the effect valve stem protrusion height
Increased rocker arm surface contact area allows the ability to run higher lift cams that previously could not be used with valves having a 6.00 mm valve stem
Rocker arm rides directly on the 9.50 mm shim surface, allowing for a significantly greater rocker arm swipe surface area
Conversion kit uses Kibblewhite beehive springs combined with a lightweight valve spring retainer that houses a standard 9.50 mm hardened steel shim
Use of titanium valves with this kit is recommended.
'23-'25 CVO's check valve lift to determine compatibility with KPMI spring kits.
To maximize shim contact in the retainer, Kibblewhite strongly recommends tipping (shortening the valve tip).
Made in the USA
Springs are progressively wound using Kobe super-clean, chrome silicon (CrSi) based wire that is heat-treated and shot-peened
Valve stem protrusion height is increased by apropriximately 0.100"
Garage
-3%
