Lightweight Racing Valve Spring Kit

Upgrade your valvetrain for reliable high-RPM performance. The Kibblewhite Lightweight Racing Valve Spring Kit is built to maintain precise valve control when engine speed and cam lift increase. Compared to stock springs, it uses higher spring rates and high-lift compatibility to help reduce valve float and keep your engine operating consistently under demanding conditions.

This kit is also compatible with boosted or turbocharged applications, making it a strong choice for riders and builders who need stability and durability from the valvetrain. With CNC-machined retainers and Cr-Si dual springs, it’s designed to support high-performance camshaft setups and aggressive riding or racing use.

Key features:

• ✅ High-RPM valvetrain control with Cr-Si (chromium silicon) alloy dual springs
• ✅ Performance-ready hardware: CNC-machined titanium retainers and heat-treated steel basewashers
• ✅ High-lift compatibility up to 0.450" for performance camshafts

Benefits of using it:

• 🔹 More stable valve action to help prevent valve float at high RPM
• 🔹 Supports performance builds including high-lift cams and boosted setups
• 🔹 Quality you can trust—Made in the USA by Kibblewhite

Technical specifications:

• 📌 Spring lift: 0.450"
• 📌 Open pressure: Intake 204 lb, Exhaust 165 lb
• 📌 Seat pressure: Intake 60 lb, Exhaust 50 lb

Kit includes:

• 2× Intake CrSi valve springs
• 2× Exhaust CrSi valve springs
• 2× Intake titanium retainers
• 2× Exhaust titanium retainers
• 2× Intake H.T. (heat treated) steel basewashers
• 2× Exhaust H.T. (heat treated) steel basewashers

Why choose this product?

• ⭐ Built for performance engines that demand consistent valvetrain control
• ⭐ Premium materials (Cr-Si springs + titanium retainers) for durability and reduced mass
• ⭐ A complete matched kit for intake and exhaust—ideal for performance-oriented rebuilds