Magnaflow 12280 Straight-Through Performance Muffler 2.5in. Center Inlet / Dual 2in. Outlet Oval 5x8x18

The MagnaFlow 12280 is a universal straight-through performance exhaust muffler featuring a 5 x 8 inch oval body with an 18-inch body length and 24-inch overall length. Built from corrosion-resistant stainless steel, it is designed to deliver improved exhaust flow and MagnaFlow's signature deep, aggressive exhaust tone.

At its core, the 12280 uses a perforated stainless steel straight-through design wrapped in stainless steel mesh and acoustic fiber fill. This free-flowing construction minimizes exhaust restriction, supports increased engine performance, and provides excellent sound control for a smooth, deep tone.

Key Features:

• Inlet/Outlet: 2.5 in. center inlet / dual 2 in. outlets (4 in. center-to-center outlet spacing)
• Body Shape: 5 x 8 in. oval with satin finish
• Body Length: 18 in. | Overall Length: 24 in.
• Core: Straight-through perforated stainless steel with mesh wrap and acoustic fiber fill
• Material: 409 stainless steel construction — corrosion and rust resistant
• Reversible design for flexible, custom installation orientations
• CNC precision robotic manufacturing for consistent weld quality
• Lap-jointed and fully welded seams prevent distortion or cracking
• Backed by MagnaFlow's limited lifetime warranty
• Sold individually — gaskets and hardware not included

The MagnaFlow 12280 is a universal fit muffler suited for custom exhaust builds and performance upgrades. Its reversible inlet/outlet configuration allows flexible placement to meet specific spacing and fabrication requirements. Professional installation is recommended, and custom fabrication, cutting, or welding may be required.