The COMP Cams Thumpr Camshafts are high-performance camshafts originally intended for sports car endurance racing. Available in hydraulic flat tappet, hydraulic roller, and retro-fit hydraulic roller designs, the Thumpr Camshafts are designed to fit popular applications, including carbureted and late model electronic fuel injection systems. The Thumpr Camshafts are configured to provide the best performance when combined with advanced valve train components such as the Beehive Valve Springs, Ultra Pro Magnum Rockers, and the Magnum Pushrods. This high-performance camshaft features a long exhaust duration and other grind characteristics to produce the head-turning, powerful, and hard-thumping exhaust note without depreciating the power output or the steerability of the vehicle.

Competitions Cams, Inc., commonly known as COMP Cams, is a world-leading aftermarket automotive parts manufacturer. COMP Cams was founded in 1976 and then incorporated in 1977. COMP Cams' headquarters is established in Memphis Tennessee and they also have five manufacturing locations spread across the United States. COMP Cams began building a name for itself by selling valve train products via satellite distribution stores. Over the years, COMP Cams has acquired several companies that manufacture transmissions, electronic fuel injection, and nitrous oxide. As of today, COMP Cams comprises a total of 13 companies with hundreds of employees. The company is a major mover in the automobile industry, developing superior and state-of-the-art techniques and methodologies that have become a standard in various competitions such as NASCAR. The technological advancement and innovations enable COMP Cams to manufacture premium aftermarket performance parts that are compatible with leading high-performance vehicles. COMP Cams' products are also the go-to brand of hot-rod enthusiasts, engine builders, and professional racers.