Description: This traction bar kit is a perfect fit for 2011 - 2019 GM trucks with a 6.6L Duramax engine, including regular cab long box, crew cab short box, and extended cab short box models. Stock trucks can gain a lot from these traction bars, and they're almost a must - have when you modify your truck. Curb axle hop and twist effectively with Wehrli traction bars. When you increase the horsepower of your diesel truck, traction bars are a necessary upgrade to prevent axle twisting, which can cause broken u - joints, driveshafts, and twisted axle housings. These traction bar brackets bolt onto the axle tube bottom via axle u - bolts and weld to the frame at the front end. We use high - quality RockJock rebuild - able and grease - able “Johnny Joint” heim connections at the frame for easy axle torsion adjustment or when you change the rear height of your truck. Part Number: WCF100851. Features: It comes with a lifetime warranty against bending or breaking for the original purchaser. The 60' heavy - duty bars are built to last. HD polyurethane bushings with solid hiems on both ends ensure durability. RockJock Johnny Joints add flexibility. Frame - side weld - on mounts and axle - side bolt - on mounts are easy to install. Grade 8 hardware and powder coating with a zinc primer base coat provide long - lasting protection. Notes: Use part number WCF100851 for regular cab long bed, extended cab short bed, or crew cab short bed trucks. If you have a lift kit and your U - Bolts face up instead of down like the factory, use Traction Bar Kit WCF100855.

Using the traction bar kit is straightforward. First, make sure your truck is a 2011 - 2019 GM with a 6.6L Duramax engine and the appropriate cab and box configuration. If you have a lift kit with U - Bolts facing up, use the WCF100855 kit instead. Bolt the traction bar brackets onto the bottom of the axle tube using the axle u - bolts. Then, weld the front end of the brackets to the frame. The RockJock Johnny Joints allow you to adjust the torsion on the axle or make changes if you raise or lower the rear of your truck. When it comes to maintenance, regularly check the Grade 8 hardware for tightness. Grease the RockJock Johnny Joints as needed to keep them working smoothly. The powder coating with a zinc primer base coat protects the bars, but if you notice any chips or damage, touch it up to prevent rust. Remember, this kit comes with a lifetime warranty against bending or breaking for the original purchaser, so you can use it with confidence.