Kibblewhite Valve Spring Kit (Lightweight Racing) is built to improve valvetrain control and reliability when your engine is pushed hard. With Chrome‑Silicon springs and titanium retainers, this kit helps maintain consistent valve action and reduces the risk of valve float in demanding riding or racing conditions.
It’s supplied as a complete set for one engine and is engineered for use with both standard and oversized valves. If you’re refreshing a worn valvetrain or building a performance-focused motor, this kit delivers the spring pressures and quality materials you want for dependable high-rpm operation.
Key features:
✅ Chrome-Silicon intake and exhaust valve springs for strength and long service life
✅ Titanium upper collars/retainers for reduced mass and improved response
✅ Includes high-tensile steel base washers (lower collars included as required)
Benefits of use:
🔹 Helps maintain stable valve control at higher rpm (reduces valve float risk)
🔹 Lighter retainer setup can improve throttle response and valvetrain durability
🔹 Complete one-engine kit makes rebuild planning easier (note: keepers not included)
Technical specifications:
📌 For stainless valves
📌 Installed height: Intake 1.150", Exhaust 1.100"
📌 Spring lift: Intake 0.395", Exhaust 0.370"
📌 Spring seat pressure: Intake 55 lb, Exhaust 46 lb
📌 Spring open pressure: Intake 151 lb, Exhaust 119 lb
📌 Materials: Chrome-Silicon springs, Titanium retainers/collars
📌 Includes: 2x intake springs, 2x exhaust springs, 2x intake Ti retainers, 2x exhaust Ti retainers, 2x intake steel base washers, 2x exhaust steel base washers
📌 Made in the U.S.A.
Why choose this product?
⭐ Proven Kibblewhite performance valvetrain components for demanding builds
⭐ High-quality materials (CrSi + titanium) for strength and reduced moving mass
⭐ Ideal upgrade during a top-end rebuild when reliability matters most
