Description
If you’re running your engine hard, OEM valves and springs will hold you back. The PROX 28.SES6329-1 Kit replaces weak factory components with nitrided steel valves and premium chrome vanadium springs engineered to handle sustained high-RPM abuse without failure. This is a direct bolt-on upgrade that uses your existing retainers and seals—no machine work required.
Built for serious drivers who demand reliability under extreme conditions, this kit delivers the durability and performance stability your engine needs when pushed to the limit.
- Nitrided steel valves
- Reduced wear resistance
- Chrome vanadium springs
- High-RPM rated
- OEM retainer compatible
- Bolt-on installation
- Intake or exhaust options
- Existing seals compatible
- Premium material construction
- MPN: 28.SES6329-1









