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CMS 4V Stage 3 Spring Kit - .500" lift High Load

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Product Description

Spring load at 1.48" 115lbs
Spring load at 1.000" 300lbs
Spring rate 240 lbs per inch
Coil bind .940"

Performance .500 lift" beehive valve springs for the 4V Ford heads 96 and newer.  Drop in replacement, no machining necessary.  Includes springs and aftermarket moly retainers.  These Valve Springs have been through multiple anti-fatigue processes and work very well on High Boost / High RPM Street / Strip Applications as well as Endurance / Road Race Applications. They are a little more mild than our Stage 4 Valve Springs. We typically use these for applications up to 25lbs of boost and suggest the Stage 4 Springs for anything higher.  Made in the USA.

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