Stainless Muffler 3in Center In / Offset Out

The MagnaFlow Performance Exhaust Stainless Muffler 3in Center In / Offset Out (Part No. 13259) is a heavy-duty universal muffler engineered for serious exhaust system builders who demand both acoustic refinement and durability. Built entirely from stainless steel, this XL three-chamber design features a 3-inch center inlet with 3-inch offset outlet, accommodating a wide range of vehicle platforms and installation angles while delivering reliable noise suppression across RPM ranges.

The specifications translate directly to real-world performance advantages. The oval body—18 inches wide by 9 inches tall by 4 inches deep—provides internal volume that supports mid-range torque preservation without sacrificing high-RPM responsiveness. The 24-inch overall length offers flexibility for vehicles where space is constrained while the stainless steel construction resists corrosion from road salt, moisture, and exhaust condensation far better than mild steel alternatives. Weighing 11.1 lbs, this muffler balances substance with reasonable weight distribution for most suspension systems.

This muffler suits builders working on custom exhaust systems, mild performance upgrades, and restorations where the center-inlet/offset-outlet configuration aligns with existing piping geometry. The universal design reduces fitment complexity compared to vehicle-specific units. Offset outlet positioning addresses common installation constraints and allows straightforward rear-bumper exit routing. MagnaFlow's reputation in the performance exhaust market rests on stainless construction quality and consistent internal baffle design—specifications this SKU delivers without premium pricing.