1.355 Single Valve Spring - RPM Series (1)

The 1.355 Single Valve Spring – RPM Series from PAC RACING SPRINGS is a high-performance component designed for engine builders and motorsports enthusiasts. This single valve spring is specifically engineered for applications that demand tight tolerances and consistent performance at extreme RPMs. Whether you're working on a street performance engine or a competitive racing platform, this spring is built to deliver reliability and precision.

PAC's RPM Series springs are crafted using proprietary wire geometry and advanced heat-treatment processes, ensuring they maintain consistent spring rates even under high-RPM conditions. This design prevents issues such as preload loss and spring collapse, which are common with lesser springs. By providing accurate spring pressure throughout the valve lift cycle, this component helps to prevent valve float, reduce camshaft wear, and ensure repeatable valve timing.

Ideal for builders utilizing modern cam profiles or turbo applications, the 1.355 Single Valve Spring is a crucial upgrade for any engine build where OEM springs may fall short. Proper spring selection is essential, and PAC's engineering documentation assists in matching the outer diameter, seat pressure, and installed height to your specific camshaft and cylinder head combination.