(210) 432-0571

Serving San Antonio, Texas and the surrounding areas since 1978.

Flowmaster Original 40 Series Mufflers

Flowmaster Mufflers

Flowmaster Original 40 Series Mufflers

-Prices Starting at $89.95-

Available in four part numbers

The 40 Series is the most aggressive sounding street and strip muffler in Flowmaster’s product line. If you are looking for the original "Flowmaster tone," the 40 Series is the one. The performance street and strip muffler will also generate interior resonance within the vehicle. So if you want to really hear your exhaust system inside the vehicle as well as outside it, the 40 Series is for you.

Flowmaster Mufflers:

Flowmaster 40 Series Mufflers:

#42441 - 40 Series Muffler, 2.25" INLET (Offset) / OUTLET (Center)

#42443 - 40 Series Muffler, 2.25" INLET (Offset) / OUTLET (Offset), Ford Mustang

#42541 - 40 Series Muffler, 2.50" INLET (Offset) / OUTLET (Center)

#42543 - 40 Series Muffler, 2.50" INLET (Offset) / OUTLET (Offset)