Supertech Subaru EJ20/25 70lbs/35.5mm Dual Valve Spring Kit (w/Steel Retainers)

If you're rebuilding the top end of your Subaru EJ20 or EJ25 engine, this Supertech dual valve spring kit with steel retainers is a solid choice. This kit is designed to handle increased camshaft lift and higher RPMs, making it suitable for performance builds where the stock springs might not be up to the task. The springs are rated for 70 lbs of seat pressure and 35.5mm installed height, providing the necessary force to keep valve float at bay during aggressive driving or high-RPM operation.

The kit includes steel retainers, which are a strong and reliable option for performance applications. These retainers work in conjunction with the dual springs to ensure proper valve control and prevent valve float, especially when paired with more aggressive camshaft profiles. Supertech is known for producing well-built engine components, and this valve spring kit is no exception. Proper installation is key, so be sure to follow the manufacturer's guidelines for seat pressure and installed height to get the most out of this kit.

This kit is a critical component for anyone looking to extract more performance from their EJ engine. It's designed to work with specific camshafts and requires careful attention during installation to ensure optimal performance and engine longevity. Make sure you have the correct tools and knowledge for a valve spring installation, or consider having a professional mechanic handle the job.