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Manley Extreme Duty exhaust valves are specified for select Subaru WRX EJ20 and 2004 STI exhaust applications with a 33.0 mm diameter. Part of Manley’s Extreme Duty Series, these valves are intended for high-heat, high-force uses and incorporate chrome stems, hard tips and swirl-polished under-head areas to improve flow and long-term wear resistance in extreme racing and marine environments.
Manley 00-03 Subaru WRX (EJ20) / 04 STi Exhaust 33mm Stainless Extreme Duty Valves
