Overview Reviews Product Description Manley?s 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 Product Videos Custom Field Product Reviews Write a Review Write a Review × Manley Performance Manley 33mm Race Master Exhaust Valves for Subaru WRX EJ205/STi EJ257 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *