Flowmaster 40 Series Oval Muffler, Dual 2.5″ In/Out

Experience the iconic Flowmaster sound with the new 40 Series Chambered Muffler, engineered for performance and durability. Constructed from high-quality 16-gauge aluminized steel and fully MIG welded for long-lasting strength, this muffler delivers an aggressive exhaust tone without sacrificing reliability.

Ideal for street, strip, and off-road applications, the dual 2.5" inlet and outlet configuration ensures optimal flow while maintaining a compact 19" overall length. Its oval design and aggressive sound profile make it a perfect upgrade for enthusiasts seeking that signature Flowmaster growl. No internal packing means no risk of blowout—just pure, consistent performance.