Kibblewhite Precision 20-23450 Rocker Valve Spring Conversion Kit with Racing Valve Springs - 0.675in. Lift - 86Lb. - Steel seats-heated-seats check out the engineering report

check out the engineering report

Market Color: Smoked Navy

2015-2016 Harley Davidson FXDF Fat Bob

Anodized red

Kibblewhite Precision 20-23450 Rocker Valve Spring Conversion Kit with Racing Valve Springs - 0.675in. Lift - 86Lb. - Steel seats-heated-seats check out the engineering reportConversion kit uses Kibblewhite racing springs combined with a lightweight valve spring retainer that houses a standard 9. 5 mm hardened steel shim. Rocker arm rides directly on the 9. 5mm shim surface, allowing for a significantly greater rocker arm swipe surface area. Increased rocker arm surface contact area allows the ability to run higher lift cams than previously could not be used with valves having a 6mm valve stem. Rocker shim thickness can be