The Flowmaster 71249 Flow FX Series Mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the "chambered" muffler sound. The interior features a large 3.00", straight-through, stainless steel, perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded "bright" 409 stainless steel construction with the Flow FX logo embossed on both sides of the case. The Flow FX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.• Durable Fully Welded Bright 409S Stainless Steel• High Temp Interior Sound Absorption Material Offers Great Sound Control• High Flow Straight-Through Design for Great Performance• Moderate Exterior Performance Tone• Mild to Moderate Interior ToneSpecsBody Dimensions: 4"H x 18"L x 9"WBody Material: 409 Stainless SteelInlet Connection: Slip-FitInlet Inside Diameter: 3"Inlet Outside Diameter: 3.13"Muffler Outlet Diameter: 3"Muffler Overall Length: 24"Outlet Location: CenterOutlet Outside Diameter: 3.13"Sound Level: ModerateFit: UniversalVehicle Type: 4/6 Cyl. EnginePart Number: 71249 High-temp sound absorption materials Internal flow design is reversible MIG-welded ""bright"" 409 stainless steel construction | Flowmaster 71249 Flow FX Muffler