Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. We, at Ferrea, are dedicated to providing the absolute best product on the market. Our extensive R & D programs provide technological gains, which are implemented in each of our competition plus valves. They are engineered for high RPM, high horsepower racing engines, and are chosen by many top NASCAR, Drag, Oval & Sprint Car - racing teams.