These rear shocks are compatible with the following models
2010 - 2014 Polaris RANGER 400 4X4/HO
2011 - 2013 Polaris RANGER 500 4X4 EFI
2017 - 2020 Polaris RANGER 500 EFI
2011 - 2013 Polaris RANGER 500 4X4 CREW
2014 - 2020 Polaris RANGER 570 EFI
2014 - 2020 Polaris RANGER 570 EFI CREW
2016 - 2020 Polaris RANGER 570 FULL SIZE
2015 - 2017 Polaris RANGER ETX
2013 - 2014 Polaris RANGER 800 EFI MIDSIZE