End the dreaded axle-wrap issues from your lifted 2011-2019 GM 2500HD/3500HD by installing theÂ Cognito 110-90459 SM Series Limited Dynamic Geometry (LDG) Traction Bar Kit. The unique design of these traction bars eliminates binding during the full travel of your trucks suspension while also allowing for precise adjustments to be made while installed - no need to drop the bars! The boxed sheet metal construction delivers optimum performance as well as a unique look that will surely make your truck stand out in the crowd! These traction bars will fit on trucks with a 6"-9" rear lift height. Features: Fits 6"-9" Rear Lift On-Truck Adjustability Boxed Sheet Metal Construction Heavy Duty Brackets and Hardware Semi Gloss Black Powder Coating Made In The USA!