KIBBLEWHITE Valve Spring Kit 30-31580

If you're running high-RPM applications or simply want to eliminate valve train wear before it becomes a problem, upgrading to stainless steel valves and springs is one of the most reliable ways to extend engine life. The KIBBLEWHITE Valve Spring Kit 30-31580 replaces your OEM intake components with purpose-engineered stainless steel valves and heat-treated springs that resist thermal fatigue and mechanical degradation far better than factory titanium parts. With up to 4x longer service life, you'll spend less time rebuilding and more time driving.

This is a complete conversion kit—you get everything needed for a straightforward head swap. Each component is designed using F.E.A. analysis and proprietary spring modeling software, ensuring precise fit and performance for your specific engine application. Built and assembled in the U.S.A., this kit represents the kind of purposeful engineering serious racers and builders rely on.

• Forged stainless steel intake valves
• Chrome-silicon heat-treated springs
• Ultra-light titanium retainers
• Hardened steel spring bases
• 4x longer valve life vs. OEM titanium
• F.E.A. engineered design
• Application-specific engineering
• Bolt-on conversion kit
• Made in U.S.A.