Whether your diesel truck's factory muffler has seen better days, or you want to fine-tune it's sound, we here at Alligator Performance have a bunch of aftermarkets, universal mufflers that can get the job done. We have a wide selection of different mufflers with a variety of internal designs, lengths, diameters, materials, exit styles, and finishes so that you can find the perfect muffler for your build. We have everything from ultra-quiet chambered mufflers, aggressive straight-throughs, and awesomely loud race mufflers, giving you a ton of options for your beastly 6.7L Cummins exhaust note. Ram Cummins Fitments: 2013, 2014, 2015, 2016, 2017, 2018 Ram 6.7L Cummins.Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon.Some exceptions apply, please see individual product pages for specific fitments.