American Star Polaris UTV Delron (Delrin) Front A-Arm Replacement Bushing Kit (8 Bushings) for RZR 570 12-up, RZR 800 08-up, RZR 800S 09-up, RZR 800 4 10-14. Replaces Polaris Part # 5436973 High Quality Manufactured To Exceed OEM Specifications Replaces Polaris Part # 5436973, 5439732 Durable, Tough and Long Lasting Injected Delron Self Lubricating Material This Kit Replaces All Front A-Arm Bushings Fits All Polaris 570 and 800 Models