Description
If you’re pushing your engine to its limits, OEM valves and springs will fail you—they simply aren’t engineered for sustained high-RPM abuse. The PROX 28.SIS2402-2 replaces those weak points with nitrided steel valves and premium chrome vanadium springs that handle extreme conditions without degradation. This kit delivers the durability and reliability you need when performance matters.
- Nitrided steel valves
- Increased wear resistance
- Premium chrome vanadium springs
- High-RPM rated construction
- Bolt-on installation
- Works with OEM retainers
- Works with OEM bases
- Works with OEM seals
- Intake or exhaust configuration
- MPN: 28.SIS2402-2
