This set of two wheel bearings will replace both left and right, front or rear, of your worn out factory bearings. If for any reason you are not happy with our American Star wheel bearings, please let us know! Fits the following: Polaris Sportsman 550 850 1000 All Years Scrambler 850-1000 All Years RZR XP 900 All Years RZR 900 50 55 60 Inch All Years RZR XP 1000 All Years, RZR XP 4 1000 All Years, RZR Turbo All Years, RZR 570 EFI (front only) 2012-2017 Ranger 4 x 4 800 EFI (front only) 2010-2014 Ranger 4 x 4 800 EFI Crew (front only) 2010-2014 Ranger 6 x 6 800 (front only) 2010-2016 Ranger XP 800 (front only) 2012 RZR 4 800 (front only) 2010-2014 RZR 800 (front only) 2011-2014 RZR 800 S (front only) 2011-2014 RZR 4 XP Jagged X 2013 Ranger 900 XP (front only) 2013-2016 Ranger Diesel HST/Deluxe (front only) 2014 Ranger 1000 Diesel (front only) 2015-16