KIBBLEWHITE OEM Replacement Valve Spring Kit — 0.415" lift, 270 lb open, 127 lb seat – 36-47 Big Twin

OEM-quality valve spring kit engineered to restore stock valve pressures and work with original cam profiles. 🔧

Retainers, keepers, and basewashers are modeled with finite element analysis to maximize mechanical strength.

Springs are wound from Super Clean chrome silicon wire, heat treated and shot peened for long service life.

Manufactured to original O.E.M. specifications using modern materials and production techniques.

Kit includes:

• 4x CrSi valve springs
• 4x high-tensile steel retainers
• 4x high-tensile steel basewashers
• 4x pairs of high-tensile steel keepers

Made in the USA. 🇺🇸