Kooks Headers X-Pipes

X-pipes are used primarily for high-rpm performance and race applications. Kooks Headers X-pipes are heavy-duty and crack-resistant, featuring large diameter stainless steel construction with smooth-flowing mandrel-bent tubing. Most are designed to be used with Kooks long tube headers. Some applications require cutting the factory exhaust system. Select models connect to the OEM connection point. Kooks Headers X-pipes are offered in three versions: * Off-road (non-catted) for full track use with no horsepower loss and the loudest exhaust tone * With high-flow catalytic converters; recommended for street driving with little or no horsepower loss and a deeper exhaust tone * With Kooks ultra-high performance GREENCATS catalytic converters; designed for naturally aspirated and forced induction engines up to 900 hp, eliminates most "Check Engine Light" warnings Note: Kooks Headers X-pipes may not be legal for sale, installation, or use in some areas. Check your state and local laws. Show Less