Kibblewhite Valve Spring Kit is built for riders and engine builders who need reliable valvetrain control in high-lift, high-rpm conditions. By upgrading to quality chrome-silicon springs with lightweight titanium retainers, you reduce the chance of valve float and help maintain consistent valve timing when it matters most.
This kit is engineered to work with both standard and oversized valves, making it a smart choice for performance builds and refreshed top ends. Everything is supplied as a complete spring kit for one engine, so you can rebuild with confidence and get back to riding or racing faster.
Key features:
✅ Chrome-silicon (CrSi) intake & exhaust valve springs for durability and stable pressure
✅ Titanium upper collars/retainers for reduced reciprocating mass
✅ Complete spring kit for one motor (intake and exhaust sides)
Benefits of use:
🔹 Improved control at higher rpm helps reduce valve float risk
🔹 Designed for high-lift racing applications (0.415" lift rating)
🔹 Good fit for performance rebuilds using standard or oversized valves
Technical specifications:
📌 Intake installed height: 1.290"
📌 Exhaust installed height: 1.240"
📌 Spring lift: 0.415"
📌 Open pressure: Intake 169 lb / Exhaust 170 lb
📌 Seat pressure: Intake 64 lb / Exhaust 65 lb
Kit includes:
📌 2x Intake CrSi valve springs
📌 2x Exhaust CrSi valve springs
📌 2x Intake titanium retainers
📌 2x Exhaust titanium retainers
📌 2x Intake H.T. steel base washers
📌 2x Exhaust H.T. steel base washers
Note: Keepers are not included.
Why choose this kit?
⭐ Made in the U.S.A. with performance-focused materials and design
⭐ A proven upgrade for racing-oriented valvetrain reliability
⭐ Complete, model-specific kit simplifies sourcing the right components
