mbrp s61180plm 5" aluminum cat back, single side exit (no muffler) for dodge diesel mbrp diesel5in. cat back; single side exit; no muffler; aldelivers a rich mellow exhaust noteinstalls with common hand toolscan improve fuel economy by 1-2 mpgboosts torque and horsepowerbuilt to performminimize back pressureimproved throttle response2 year warrantybuilt from heavy duty aluminized steel our installer series performance exhaust systems offer a value price without compromising on the quality built into every component. while the seams are a major point of rust through with some budget systems our fully sealed tubing adds years to your system. constructed to the same specifications as our top of the line pro series we back this line with an industry leading 3 year warranty.exhaust system