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Manley Race Flo intake valves for 2000–2004 Subaru WRX (EJ20) and 2004 STI are 37mm stainless valves built for engines operating up to 8000 RPM. Favored in racing, they feature swirl-polished under-head areas, fully machined combustion faces, chrome stems and hard tips for durability. Recommended for alcohol-fueled engines, they are offered in Race Flo and Race Master shapes to suit specific build needs.
Manley 00-03 Subaru WRX (EJ20) / 04 STi Intake 37mm Stainless Race Flo Valves
