Manley Performance Race Series Race Flo Intake Valves 36mm STD Subaru WRX EJ205 EJ255 STi EJ257

Manley Valves have set the standard for excellence in quality, material, and design in the performance world. Manley Valves feature chrome stems, hard tips, and fully machined surfaces with swirl polished radii.

Manley Performance has you covered whether its pistons, rods, valve springs retainers, valves, cranks, and more. Consider Manley for your other engine parts as well.
Manley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry from their inception; a fact that still remains true even as we've shifted our focus and resources to the Sport Compact Market.
Manley Performance Sport Compact stainless steel valves utilize our exceptional "Race Series" alloy and are manufactured to the highest quality standards.

Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.

Manley intake valves typically are built with our original "Pro-Flo" design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight.