Polaris wheel hubs lack of protection against water and mud due to the absence of oil seals. Our dedicated off-road wheel bearings feature a set of spring loaded dust seals which significantly increase the watertightness. Factory Links bearings are packed with a heavy duty premium marine grease and an addition of a special complex thickeners which allows it to be virtually waterproof. It provides unsurpassed rust and corrosion protection. For RZR Built before 3/21/10, make sure your vehicle is equipped with the upgraded hub kit: 2204717 Contains Bearings x1 Factory Links kit fits the following vehicles: Polaris ACE 325 (14-16) R ACE 500 (17-18) R ACE 570 (15-18) R ACE 900 (16-18) R Brutus HD 900 (13-15) R Diesel 455 (99-01) R Forest 800 (15-15) R Hawkeye 325 (15-15) R Hawkeye 400 (12-14) R LSV ELECTRIC (11-12) R Ranger 1000 Diesel (15-18) R Ranger 325 (15-16) R Ranger 400 (10-14) R RANGER 48V EV MD (21-21) R Ranger 4×4 570 Cr (21-21) R Ranger 500 (04-21) R Ranger 570 (14-21) R Ranger 570 FULL S (21-21) R Ranger 6×6 500 (04-04) M Ranger 6×6 500 (04-05) R Ranger 6×6 700 (06-09) M Ranger 6×6 700 (06-09) R Ranger 6×6 800 (10-16) M Ranger 6×6 800 (10-16) R Ranger 700 (05-09) R Ranger 800 (10-14) R Ranger 900 (13-18) R Ranger 900 Diesel (11-14) R Ranger 900D HIPPO MPS (14-14) R RANGER CREW 570 FULL SIZE (21-21) R Ranger Diesel HST/Deluxe (14-14) R Ranger Diesel INTL (14-14) R Ranger EV (10-18) R RANGER EV 4X4 (21-21) R Ranger HST (15-16) R Ranger XP 800 (12-12) R RZR 4 800 (10-14) R RZR 570 (12-18) R RZR 800 (08-14) R RZR S 800 (09-14) R RZR TRAIL 570/PREMIUM (21-21) R Sportsman 325 (15-15) R Sportsman 335 (99-00) R Sportsman 400 (01-14) R Sportsman 450 (06-18) R Sportsman 500 (96-13) R Sportsman 570 (14-18) R Sportsman 570 6×6 (17-18) R Sportsman 600 (03-05) R Sportsman 700 (02-07) R Sportsman 800 (05-14) R Sportsman 800 6×6 (09-14) M Sportsman 800 6×6 (09-14) R Sportsman Forest 500 (11-14) R Sportsman Forest 570 (14-15) R Sportsman Forest 800 (12-13) R Sportsman MV7 (05-05) R Sportsman Touring 500 (08-13) R Sportsman Touring 570 (14-18) R Sportsman Touring 800 (08-09) R Sportsman X2 700 (08-08) R Sportsman X2 800 (07-09) R Worker 335 (99-99) R Worker 500 (99-02) R Xplorer 500 (97-97) R *Designation for wheel fitment F=Front R=Rear M=Middle