MagnaFlow XL 3 Chamber Mufflers use a unique combination of large diameter perforated tubing and strategically placed sound baffles to reduce unwanted resonance and help your engine create horsepower. The sound baffles tune the sound waves using calibrated tuning gate openings that allow portions of the waves to pass through. These tuned waves reflect off the back wall of the muffler and cancel out unwanted harsher sounds. The large diameter perforated core eliminates the flow restrictions of a louvered style core. A careful balance between perforation size/spacing and the baffle tuning gate make for a great 3 chamber performance muffler. PartNumber : mag13265 Description : Muffler Trb SS 4X9 18 2.25/2.2 Main Piping Diameter : 2.25 Material : Stainless Muffler Body Height : 4 Muffler Body Width : 9 Muffler Body Length : 18 Muffler Overall Length : 24 Muffler Body Diameter : 4 x 9 Muffler Body Material : Stainless Muffler Body Finish : Satin Muffler Body Shape : Oval Muffler Configuration : Offset/Offset Muffler Inlet Diameter : 2.25 Muffler Outlet Diameter : 2.25 Muffler Type : Multi-Chamber Tip Quantity : Warranty : N/A 614 : 4 616 : 9 615 : 18 52 : 4 x 9 621 : Stainless 200 : Satin 33 : Oval 601 : 2.25 622 : 2.25 1174 : Multi-Chamber 1161 : Body Height (in.) : 4 Body Length (in.) : 18 Body Width (in.) : 9 Inlet Connection Type : Pipe Connection Inlet Position : Front Inlet Size (in.) : 2.25 Inlet Type : Single Offset Inlet Main Piping Diameter (in.) : 2.25 Material : Stainless Steel Muffler Count : 1 Outlet Position : Rear Outlet Size (in.) : 2.25 Outlet Type : Single Offset Outlet Overall Length (in.) : 24 (2 ft.) Shape : Oval Body Material : Stainless Finish : Satin Inlet Inside Diameter (in.) : 2.25 Muffler Body Diameter (in.) : 4 x 9 Muffler Overall Length (in.) : 24 Outlet Outside Diameter (in.) : 2.25 Outlet Inside Diameter (in.) : 2.25 Title : Universal Muffler WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Body Height : 4.000 in. Body Length : 18.000 in. Muffler Body Diameter : 4.000 in. x 9.000 in. Outlet Inside Diameter : 2.250 in. Outlet Outside Diameter : 2.25 Body Diameter : 4 x 9 Inlet Inside Diameter : 2.25 Exhaust Tip Quantity : Body Width : 9 Outlet Inside Diameter : 2.25 Body Height : 4 Body Length : 18 Inlet Inside Diameter : 2.250 in. Exhaust, Mufflers & Tips::Muffler