Polaris Sportsman front differential kit with Sprague carrier 450 HO 570
Polaris Sportsman front differential kit with Sprague carrier 450 HO 570. Updated sprague as of November, 2023. This differential kit comes with an upgraded pinion bearing. This bearing and seal kit works on the following Models: This Sprague Cage is made of hardened aluminum and is an upgrade to the OEM plastic cage. 2015 – 2016 4X4 Polaris Sportsman ETX 2016 – 2023 4X4 Polaris 450 Sportsman HO 2015 – 2023 4X4 Polaris 570 Sportsman NON SP 2015 – 2022 4X4 Polaris 570 Sportsman 570 Sportsman SP Diff # 1333371, 1333393, 1337140 2017 – 2022 6X6 Polaris 570 Sportsman Big Boss Diff # 1333371, 1333393, 1337140.