Super 40 Mufflers
Super 40 Series Delta Flow Mufflers
Developed from Flowmaster's 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


Super 40 Series Muffler Table
Part Number IN/OUT Configuration Sound Material
FLO9524452.25/2.25Center/CenterAggressiveAluminized Steel
FLO9524462.25/2.25Offset/CenterAggressiveAluminized Steel
FLO9524472.25/2.25Center/OffsetAggressiveAluminized Steel
FLO9524482.25/2.25Offset/OffsetAggressiveAluminized Steel
FLO9525452.50/2.50Center/CenterAggressiveAluminized Steel
FLO9525462.50/2.50Offset/CenterAggressiveAluminized Steel
FLO8525462.50/2.50Offset/CenterAggressiveAluminized Steel
FLO9525472.50/2.50Center/OffsetAggressiveAluminized Steel
FLO9525482.50/2.50Offset/OffsetAggressiveAluminized Steel
FLO9525492.50/2.50Offset/Offset Same SideAggressiveAluminized Steel
FLO95254542.50/2.50Dual/DualAggressiveAluminized Steel
FLO9530453.00/3.00Center/CenterAggressiveAluminized Steel
FLO9530463.00/3.00Offset/CenterAggressiveAluminized Steel
FLO9530473.00/3.00Center/OffsetAggressiveAluminized Steel
FLO9530483.00/3.00Offset/OffsetAggressiveAluminized Steel
FLO9530493.00/3.00Offset/Offset Same SideAggressiveAluminized Steel
FLO95304523.00/2.50Center/DualAggressiveAluminized Steel
FLO95304623.00/2.50Offset/DualAggressiveAluminized Steel
FLO8525482.50/2.50Offset/OffsetAggressiveStainless Steel
FLO85254542.50/2.50Dual/DualAggressiveStainless Steel
FLO8530463.00/3.00Offset/CenterAggressiveStainless Steel
FLO8530483.00/3.00Offset/OffsetAggressiveStainless Steel
FLO85304523.00/2.50Center/DualAggressiveStainless Steel
FLO8535483.50/3.50Offset/OffsetAggressiveStainless Steel
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