These front shocks are compatible with the following models

2005 Sportsman 400
2011-14 Sportsman 400 HO 4X4
2006 – 2007 & 2016-2020 Sportsman 450
2005 – 2014 Sportsman 500
2006 – 2009 Sportsman X2 500 EFI
2014 – 2020 Sportsman 570 All Except SP/6X6
2017 Sportsman 570 6X6
2005 Sportsman 600
2005 – 2008 Sportsman 700
2005 – 2016 Sportsman 800 EFI
2009 – 2015 Sportsman 800 6X6 ALL
2007 – 2009 Sportsman X2 800 EFI

2014 – 2016 Sportsman Ace 325
2015 – 2018 Sportsman Ace 570
2016 Sportsman Ace 900