Our traction bars are an excellent solution for enhancing rear axle stability, reducing driveline wear, and eliminating spring wrap. They also improve stability when towing or hauling heavy loads. By reinforcing the rear axle and preventing failure, these traction bars allow you to navigate the road smoothly without the annoyance of wheel hop. Check out our selection of Towing Upgrades for even greater durability and stability! GM Duramax Fitments: 2004, 2005 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.