Super 44 Series Stainless Steel - 2.5"IN(Dual)/2.5"OUT(Dual) custom tuning guaranteeing that your diesel truck

guaranteeing that your diesel truck always has the cleanest fuel possible

Utilizing the latest in CFD (computational fluid-dynamics)

Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur and other low lubricity diesel fuels

\Where simple rubber floor mats fail

Super 44 Series Stainless Steel - 2.5"IN(Dual)/2.5"OUT(Dual) custom tuning guaranteeing that your diesel truckFlowmaster's Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a rich powerful tone and are the most aggressive, highest performing street muffler we've ever built in a four inch case. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.