Significantly Outflows The Older 2 Chamber Mufflers...

for even more horsepower and torque. The Super 40 Series gives you less interior sound, while still giving your vehicle a deeper exterior sound. The new patented, 5'' x 10'' x 13'' , 19'' long black case design is modeled after Flowmaster's Race Muffler. The Super 40 far exceeds older models on Dyno Tests. The sound of the patented Super 40 makes everybody stand up and take notice! So get that beautiful hot rod sound along with increased horsepower and gas mileage!

Flowmaster Super 40 Mufflers