Description
If you’re running high-RPM applications or pushing your engine beyond stock limits, OEM valve and spring assemblies become a liability. The PROX 28.SES3408-1 replaces weak factory components with nitrided steel valves and premium chrome vanadium springs engineered to handle extreme combustion pressures and sustained high-speed operation without degradation. This kit delivers the durability and reliability required for serious performance builds without requiring custom fabrication or machine work.
- Nitrided steel valves
- Increased surface hardness
- Reduced wear resistance
- Premium chrome vanadium springs
- High-RPM rated design
- Stronger spring load
- Compatible OEM retainers
- Compatible OEM bases
- Compatible OEM seals
- Bolt-on installation
- Intake or exhaust config
