GSC P-D Subaru EJ Single Conical Valve Spring Titanium Retainer & Spring Seat Kit

If you're building a high-performance Subaru EJ engine, especially one that will see track time or aggressive street use, getting the valvetrain right is crucial. This GSC Power Division kit includes single conical valve springs, titanium retainers, and spring seats specifically designed for Subaru EJ engines. These components work together to handle the increased lift and RPMs that performance cams and boosted applications demand, ensuring your engine's valvetrain stays stable and reliable under stress.

The heart of this kit is the single conical valve spring. Its unique shape allows for a lighter spring than a traditional dual spring setup while still providing the necessary seat and open pressures for aggressive camshaft profiles. This design also helps reduce valve float at higher RPMs, which is critical for preventing engine damage. Paired with the titanium retainers, you get a significant reduction in valvetrain mass. Less mass means less inertia, allowing the valvetrain to follow the camshaft lobe more accurately and reducing stress on other components. Titanium is also incredibly strong and resistant to fatigue, making it ideal for the demanding environment inside an engine.

This kit is a well-built solution for Subaru EJ owners looking to upgrade their valvetrain for performance applications. The inclusion of spring seats ensures proper fitment and function with the springs and retainers. When installing these, pay close attention to the manufacturer's recommended spring pressures and installed height to achieve optimal performance and longevity. This kit is a solid choice for anyone serious about building a robust and high-revving Subaru EJ engine.