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Developed from our Top Ten race muffler lineup for use on the street and strip. Utilizing Delta Flow Technology, this muffler gives the best performance to higher horsepower vehicles. The Super 40 features a black, oversize case, which keeps the resonance down while the deep outside tone says it’s a Flowmaster!

  • Works in place of any other 40 Series muffler
  • Deeper, richer tone than original 40 Series muffler
  • The choice of performance street machine/rod builders
  • Constructed of 16-gauge aluminized steel or 409S Stainless Steel
  • Fully MIG-welded for maximum durability

 

FM_Super_40_Cutaway

 

Super 40 Series Muffler Table

IN/OUTC/CO/CC/OO/OO/O SAME SIDE
2.25"952445952446952447952448
2.50"952545952546952547952548952549
3.00"953045953046953047953048953049
3.50"853548
409S Stainless Steel Models
2.50"852546852548
3.00"853046853048
IN/OUTD/CC/DD/DO/D
2.50"/2.50"9525454
3.00"/2.50"95304529530462
409S Stainless Steel Models
2.50"/2.50"8525454
3.00"/2.50"8530452