Click to Enlarge

These Spring Kits feature a custom dual spring capable of handling 12,000 RPM for that added piece of mind (Over-rev/Mis-shift). They are also shot-peened for stress relief and interference fit to control harmonic resonance across the rev range. With this dual spring configuration, should something happen to one spring, the other prevents the valve from dropping and causing catastrophic damage.

Capable of handling much higher lift to accomodate even the most aggressive of cams like the Schrick 320 degree .

After rigorous testing in our 2.5L Stroker Engine for 4 years, these Valve Springs still tests within 2% of their original rate. We believe they are the best spring available for your BMW anywhere.

This kit includes:
-16 High Performance Dual Valve Springs
-16 Steel or Titanium Valve Retainers
-Shims

*Note: Due to the nature of titanium retainers, while they are suitable for a street car, it is only recommended they be installed in a valve train that will be inspected from time to time. Steel is still a great choice for a street or track oriented car or you can chose our shim-under kit for the lightest weight, highest performance, and reliable valve train.*

Priced as complete kit.

Estimated Volumetric Shipping Weight : 2.00 Kg