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Original 40 Series Mufflers

The 40 Series mufflers are the most aggressive sounding street and strip muffler in Flowmaster's product line. If you are looking for the original Flowmaster Sound 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 as well as outside the vehicle the 40 Series is for you.
Super 40 Mufflers


4' x 9.75' x 13' - 19' Overall Length
40 Series Offset/Center
40 Series Offset/Offset
40 Series Center/Dual
In/Out
Part Number
In/Out
Part Number
In/Out
Part Number
2.25'
2.25'
3/2.5'
2.50'
2.50'
3.00'
3.00'