New QuadBoss IRS Repair Kit. This listing is for a new QuadBoss Rear Independent Suspension Repair Kit for the ATV / UTV model(s) listed above. This kit will allow you to repair both sides of your ATV / UTV. Keep your upper and lower A-Arms and knuckles in fighting shape with this quality repair kit which contains all of the components required to rebuild the upper and lower A-Arms and knuckles on both sides. Needle bearing shafts are made with 52100 bearing steel that has been hardened and precision ground.Self-lubricating acetyl nylon bushings for better wear and performance. All metal bushings are case hardened and plated to prevent wear and corrosion. Made in USA NOTE: ARCTIC CAT AND POLARIS KITS CONTAIN BUSHINGS ONLY.