High quality replacement part for Rear Upper, Lower, Inner, Outer, Left and Right A-arm Bushing Kit fits Polaris models: Sportsman 450 HO 2×4 2016-2017 Sportsman 570 EPS 2016-2017 Sportsman 570 Touring 2016-2017 Sportsman 570 6×6 Big Boss 2017-2023 Sportsman X2 570 EPS 2017 Sportsman SP 570 EPS 2016 Included: 6 x Pivot Shaft: 5020826 Length: 74mm Inner Diameter: 10mm Outer Diameter: 16mm 12 x Bushings: 1543326 Length: 29.7mm Inner Diameter: 16mm Head Diameter: 31.5mm Tube Diameter: 21mm 4 x Bushings: 5439270 5436972 5438895 5431846 5432091 5433063 5434548 Length: 34mm Inner Diameter: 16mm Head Diameter: 31.3mm Tube Diameter: 21mm 6 x Nylon Insert Nut: 7542439 7542453 Width: 11.2mm Inner Diameter: 8mm Outer Diameter: 14.2mm 2 x Long Pivot Shaft: 5139929 Length: 282.6mm Inner Diameter: 8.2mm Outer Diameter: 16mm 4 x Flange Washer: 7556153 Thickness: 2mm Inner Diameter: 10.6mm Outer Diameter: 19.8mm 4 x Bolt: 7517873 Height: 77mm Length: 15.6mm Thread Size: 7/16-14 8 x Bushing: 5438902 Width: 18.5mm Inner Diameter: 31mm Outer Diameter: 47.5mm 4 x Bushing: 5632291 Length: 48.3mm Inner Diameter: 11.4mm Outer Diameter: 31mm Rear Upper Arm A Part Number Left: 1017747-458 1017747-067 Right: 1017748-458 1017748-067 Rear Lower Arm A Part Number Left: 1015888-458 1015888-067 Right: 1015889-458 1015889-067 Bearing Carrier: 5135563