This axle is compatible with the following 4X4 models: 2010 – 2014 4X4 Polaris 550 Sportsman ALL MODELS 2013 – 2026 4X4 Polaris 850 Scrambler ALL MODELS 2010 – 2026 4X4 Polaris 850 Sportsman ALL MODELS 2013 – 2015 4X4 Polaris 850 Sportsman XP HO ALL MODELS 2014 – 2021 4X4 Polaris 1000 Scrambler ALL MODELS 2015 – 2025 4X4 Polaris 1000 Sportsman ALL MODELS 2020 – 2026 4X4 Polaris 1000 Sportsman 48″ ALL MODELS 2016 – 2024 4X4 Polaris 1000 Sportsman Highlifter.