Upgrade your engine with the high-quality .020in #6 Check Shim by ENDERLE. Enhance performance and durability with this brass valve spring shim designed for optimal results. Experience improved valve operation and smoother engine performance. This...

Check Valve Spring Shim - 0.020 in Thick - 8 AN - Brass - Each

Bypass Shim - 0.030 in Thick - Brass - Natural - Kinsler Hi-Speed Bypass - Each

Upgrade your engine performance with the .040in #6 Check Shim by ENDERLE. This top-quality brass shim ensures optimal valve spring function, enhancing your vehicle's power and efficiency. Say goodbye to valve issues and boost your engine's performance...

Check Valve Spring Shim - 0.060 in Thick - 8 AN - Brass - Each

Upgrade your valve system with the top-quality 3/16in #6 Check Shim from ENDERLE. This durable brass shim ensures peak performance and long-lasting durability for your vehicle, providing unparalleled reliability. Precision-engineered to fit 6 AN...