Adding on an aftermarket rear bumper is one of the best ways to enhance the rear-end protection of your 2017-2019 GM 6.6L Duramax L5P, ensuring a safer and smoother off-road adventure. While the rear bumper might not take as much abuse as the front, the stock unit isn't built to handle the demands of hardcore trail riding. Aftermarket GM 2500HD/3500HD rear bumpers offer more durability and greater protection against unexpected bumps and scrapes, giving you more confidence the next time you come across a demanding trail. Pair your rear bumper with an off-road Front Bumper and gain total protection over your overland adventures.GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.