Manufacturer Part# 1911373 1911374 Replacement Part# 1912136 1912137 1911944 1911945 1912126 1912127 Package Rear Right Brake Caliper Assembly ×1 Rear Left Brake Caliper Assembly ×1 This brake caliper fit for Polaris ATV vehicles as follows: Ranger 500 4X4 2009-2010 Excpet 2x4 Ranger Crew 570/570-4 2014-2021 Except Crew 570 Full Size, Crew 570-6, Crew XP 570-6 Ranger 570 Full Size 2015-2020 Except Crew 570 Full Size Ranger 570 XP 2016 Ranger 800/800 XP/800 HD 2010-2014 Excpet 800 Crew, 800 6x6, 800 Midsize Ranger 900/900 XP 2013-2019 Excpet Crew 900, Crew 900-6, Crew XP 900, Crew XP 900-6 Ranger 900 Diesel 2011-2014 Excpet Crew 900 Diesel Ranger 1000 XP 2017 Ranger 1000 Diesel/HST 2015-2017 Except Crew Diesel 1000 Ranger EV 2014-2021 RZR 900/XP 900 2011-2014 Except RZR 4 900, RZR XP 4 900 Brutus 2013-2018 MRZR2 2013 Military RZR XP 2014-2019