Upgrade to Kooks Green Cats!

Muscle car and truck enthusiasts should not have to trade off horsepower in order to protect the environment! That's why Kooks has created the only catalytic converters that are EPA Certified and reduce emissions. These cats work with vehicles up to 800 HP and temperatures up to 1500-degree F. Specially designed with a very high-flow level, they will not create engine codes in most vehicles, thus eliminating emissions-related "Check Engine" lights. Kooks Catalytic Converters work on naturally aspirated, turbo, and supercharged applications.