Flowmaster's Super 44 muffler uses the same Delta Flow® technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive,...

The Super 50 series muffler is a larger version of Flowmaster's 50 series Delta Flow® muffler. Originally designed for trucks and SUV's, it is also well suited to muscle car...

The Flashcal for Truck and Amp'd 2.0 Throttle Sensitivity Booster kit for GM trucks offers quick, meaningful, and market-leading features that consumers love. Adjust for aftermarket tire and gear adjustments...