Description
If you’re pushing your engine to the limit, your OEM valve train becomes the weak link. The PROX 28.SES2424-1 replaces stock valves and springs with nitrided steel components engineered to withstand extreme RPM and combustion pressures without degradation. This kit delivers measurable gains in durability and reliability, especially critical for forced induction, high-boost, or sustained high-RPM applications where valve float and wear accelerate failure.
Installation is straightforward—the kit uses your existing retainers, bases, and seals, making this a bolt-on upgrade that doesn’t require extensive machine work.
- Nitrided steel valves
- Reduced wear under extreme conditions
- Chrome vanadium valve springs
- Optimized spring rate for steel valves
- High-RPM durability and stability
- Compatible with OEM retainers
- Compatible with OEM bases
- Compatible with OEM seals
- Intake or exhaust configuration
- MPN: 28.SES2424-1









