The TeraFlex 3-6″ Rear Trackbar Axle Bracket Kit is designed for Jeep Wrangler JKs with 6″ lifts and offers a variety of mounting locations for correct neutral lateral alignment of the rear axle. This bracket restores the factory handling and corrects roll center for a lift JK. This product is recommended for superior drivability to reduce rear body roll tendencies by restoring the proper roll center. Kit Includes:- One (1) rear trackbar bracket- Necessary hardware- Installation instructions Welding is recommended for final installation Bolt-on bracket mounts to rear axle Estimated installation time: 1-2 hours Installation Instructions:999091 (JK Rear Axle Trackbar Bracket Instructions).pdf Fits:Jeep Wrangler JK 2 Door (2007-2018)Jeep Wrangler JK 4 Door Unlimited (2007-2018)