Description
Manufacturer: Pro X
MPN: 28.SIS4406-2
Title: Steel Valves and Spring Kits
Option: Intake
- An alternative where the O.E.M. application uses expensive and less durable titanium valves
- These steel valves offer increased durability and easily extends the lifespan to 3x that of the O.E.M. titanium valves
- Nitrided valves offer high micro-hardness while a super-smooth surface finish reduces friction between stem and guide
- Special stronger valve springs deal with the extra weight of the steel valves
- Springs are made from premium chrome vanadium steel for higher performance and durability under high RPM
- Fully rebuildable with O.E.M. retainers, bases and seals without the need of any further engine modifications
- Intake and exhaust kits complete packages for quick, easy and cost efficient replacement




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