DYNOMAX Performance Exhaust is a leading brand of dyno-proven exhaust products for muscle cars, pass cars, diesel and gas trucks, Jeeps and sport utility vehicles. DYNOMAX products engineered for Pure Unadulterated Power include complete cat-back and axle-back performance exhaust systems, performance mufflers and the industry exclusive VT valve technology muffler, and a large assortment of accessories and related exhaust products. Each DYNOMAX product features the benefits of worldwide global engineering resources. The DYNOMAX brand is backed by an aggressive marketing program, including a national events program, easy-to-use website and digital and printed catalog, in-depth technical and installation information and tech line, and advertising program. Manufactured and marketed by Tenneco Inc.