1.300 Dual Valve Spring Kit - GM LS1

The COMP Cams 1.300 Dual Valve Spring Kit for GM LS1 is designed for automotive builders and enthusiasts seeking enhanced valve control for high-performance applications. This kit is particularly beneficial for those upgrading their LS1 engines with aggressive cam profiles, where factory valve springs may fail under increased loads and RPMs.

Featuring a dual-spring design, this kit nests an inner spring within an outer spring, significantly improving spring rate and load capacity compared to single-spring setups. The 1.300-inch outer diameter is specifically engineered for LS1 cylinder heads, ensuring a proper fit while providing the necessary stiffness to maintain valve timing and prevent mechanical issues during high-performance modifications.

Ideal for LS1 owners looking to push beyond basic modifications, this kit supports serious cam work, turbocharging, or supercharging. Whether you're building a weekend track car or a dedicated race engine, the COMP Cams Dual Valve Spring Kit ensures reliability and longevity in your valve train, making it a crucial component for any performance-focused build.