Description
If you’re running high RPM or pushing your engine beyond stock parameters, OEM valves and springs become the weak link in your valve train. The PROX 28.SIS6353-2 Kit replaces them with nitrided steel valves and premium chrome vanadium springs engineered to handle sustained performance without fatigue or wear. This is a direct bolt-on upgrade that uses your existing retainers and seals, making it an efficient way to increase reliability and durability under extreme conditions.
- Nitrided steel valves
- Enhanced durability, reduced wear
- Premium chrome vanadium springs
- High-RPM rated construction
- Accommodates extra valve weight
- Bolt-on installation compatible
- Uses OEM retainers
- Uses OEM valve seals
- Intake or exhaust configuration
- MPN: 28SIS63532
