BBK Performance Parts Exhaust X-Pipes for Chevy Camaro applications offer unrestrictive, free-flowing exhaust upgrade designed to eliminate the factory resonators for improved horsepower, torque and aggressive tone. BBK X-Pipes are made from CNC mandrel-bent aluminized tubing for lasting performance and use, and are a direct bolt-on for worry-free installation. These X-Pipes are a smog legal application since they are after-cat. BBK also offers high flow mid pipes with or without converters that are specifically engineered for use with BBK headers.