Product description
Super 40® Stainless Steel - 2.50 Offset In / 2.50 Center Out - Aggressive Sound
Flowmaster Super 40 Series Chambered Muffler
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Supplier details checked 2026-09-23 · Test catalog
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Super 40® Stainless Steel - 2.50 Offset In / 2.50 Center Out - Aggressive Sound
Flowmaster Super 40 Series Chambered Muffler
Excellent performance on high horsepower vehicles
Durable fully welded 409SS stainless steel
Deep Aggressive Sound Exhaust Note
Noticeable interior resonance
Universal Muffler - Some adaptation may be required.
Flowmaster 2.5 IN(O)/OUT(C) Super 40 SS Muffler
25 INOOUTC SUPER 40 409S
FM40SRS OFF/CEN 2.5
Developed from our Top Ten race muffler lineup for use on the street/strip, the Super 40® features Flowmaster's Delta Flow® technology. It's larger case profile provides the best of both worlds of performance and sound, especially on forced induction and high horsepower vehicles. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow® technology. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
MUFF 2.50IN