The Off Road Jeep HEAVY DUTY Track Bar Kit will work on your stock Jeep, or one that features our 3" or 4" kit. This kit is 100% bolt-on making for easy installation. ReadyLIFT Heavy Duty Rear Track Bar (77-6003) Recommended For Use In Conjunction With Our ReadyLIFT Heavy Duty Front Track Bar System. If you are looking to improve the driving experience of your Jeep JK Wrangler both on and off road, then this adjustable front track bar is exactly what you need. Make adjustments on the fly when needed for rock crawling. Adjustable Width Design Allows Proper Axle Housing-to-Chassis Alignment OEM-Style Rubber Bushings Used at Chassis End Mount Minimizes Noise Transfer and Extends Product Life Original Currie Johnny Joint Equipped for Maximum Off Road and On Road Performance Heavy Wall 1.375" DOM Tube Construction with Welded 1" Threaded End to Maintain Wall Thickness and Provide Ultimate Strength ReadyLIFT Heavy Duty Rear Track Bar (77-6003) Recommended For Use In Conjunction With Our ReadyLIFT Heavy Duty Front Track Bar System MODEL NO - 77-6002