• Race Series intake valve, stainless steel
• Meticulously engineered for bracket, drag, and oval track racing
• Ultimate choice for engines operating under 8000 RPM
• Available as single valve or full set

Built for Racers Who Push Hard, Not Just Fast

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers, and are the ultimate choice for engines operating under 8000 RPM. That RPM range covers the vast majority of genuinely built, high-power Subaru engines, making this valve a well-matched choice rather than an overkill part designed for a different RPM regime entirely. It's a valve built around the actual demands of repeated hard racing use, not just a single hard pull. That's the kind of detail that separates genuine engineering from a basic replacement part.

Meticulous Engineering, Not Just a Bigger Valve

The meticulous engineering behind this valve goes beyond simply making it bigger or lighter than stock, addressing material selection, heat treatment, and geometry together as a complete package. That comprehensive approach is what makes a genuine race valve different from a generic performance valve marketed with racing language. For anyone building toward real, repeated high-RPM use under 8000 RPM, this is a well-matched, proven choice. It's a small distinction that makes a real difference once you're actually building the engine.

Straight From Subispeed

A genuinely race-proven intake valve for 2002-2012 WRX / 2004-2012 STI, well matched to any build operating under 8000 RPM.

This Part Fits:

This is the 37mm head diameter, sold as a full set.