The Polaris Ultraweb high performance air filter was co-developed by Polaris and Donaldson to create the highest performing air filter for this vehicle. It uses Donaldson exclusive Ultra-Web Nanofiber Filtration Technology which offers a higher initial efficiency compared to standard cellulose media and has very high efficiency throughout a filter's life. Provides superior engine protection with 99.99% efficiency. Superior dust-holding capacity and 20% increase in service life over the stock air filter. Lower restriction over gives you better performance for high horsepower, torque, and acceleration. This Accessory is Designed to Fit the Following: 2019 RZR XP 1000 EPS, 2019 RZR XP 1000 DYNAMIX Edition EPS, 2019 RZR XP 1000 High Lifter Edition EPS, 2019 RZR XP 1000 Ride Command Edition EPS, 2019 RZR XP 1000 Trails and Rock Edition EPS, 2019 RZR XP 4 1000 EPS, 2019 RZR XP 4 1000 DYNAMIX Edition EPS, 2019 RZR XP 4 1000 High Lifter Edition EPS, 2019 RZR XP 4 1000 Ride Command Edition EPS, 2019 RZR XP 4 Turbo EPS, 2019 RZR XP 4 Turbo EPS DYNAMIX Edition, 2019 RZR XP 4 Turbo LE, 2019 RZR XP 4 Turbo EPS, 2019 RZR XP 4 Turbo EPS, 2019 RZR XP Turbo EPS, 2019 RZR XP Turbo EPS DYNAMIX Edition, 2019 RZR XP Turbo LE, 2019 RZR XP Turbo S, 2019 RZR XP Turbo S, 2018 RZR XP Turbo EPS DYNAMIX Edition, 2018 RZR XP Turbo EPS Fox Edition, 2018 RZR XP 1000 EPS, 2018 RZR XP 4 Turbo EPS, 2018 RZR XP 4 Turbo EPS, 2018 RZR XP Turbo EPS, 2018 RZR XP Turbo EPS DYNAMIX Edition, 2018 RZR XP Turbo EPS Fox Edition, 2018 RZR XP Turbo EPS, 2017 RZR XP 4 1000 High Lifter Edition EPS, 2017 RZR XP 1000 EPS, 2017 RZR XP 4 1000 EPS, 2017 RZR XP 4 1000 EPS, 2017 RZR XP Turbo EPS, 2016 RZR XP 1000 EPS, 2016 RZR XP 4 1000 EPS, 2016 RZR XP 4 Turbo EPS, 2016 RZR XP Turbo EPS, 2015 RZR XP 1000 EPS, 2014 RZR XP 4 1000 EPS, 2014 RZR XP 4 1000 EPS, 2021 RZR Turbo S , 2021 RZR Turbo S 4 , 2021 RZR Turbo S 4 Lifted Lime LE , 2021 RZR Turbo S 4 Velocity , 2021 RZR Turbo S Lifted Lime LE