Description
If you’re running high-RPM applications or pushing your engine beyond stock parameters, OEM valve springs will struggle to keep pace with valve float and premature wear. The PROX Valve and Spring Kit 28.SIS2444-2 replaces both intake and exhaust valves with nitrided steel construction paired with premium chrome vanadium springs engineered to handle the demands of extreme conditions without compromise. This is a straightforward bolt-on upgrade that uses your existing retainers and seals, giving you the durability and reliability needed for sustained performance.
- Nitrided steel valves
- Reduced wear under load
- Chrome vanadium springs
- High-RPM rated
- Bolt-on installation
- OEM-compatible retainers
- Uses existing seals
- Premium material construction
