Fits all the following.
Ball Joint Kit - Lower Polaris RZR XP 1000 14-18, RZR XP 1000 Built After 10/20/15 16, RZR XP 1000 Built Before 10/19/15 16, RZR XP 1000 INTL 15, RZR XP 4 1000 14-18, RZR XP 4 1000 Built After 10/20/15 16, RZR XP 4 1000 Built Before 10/19/15 16, RZR XP 4 TURBO 16-18, RZR XP 4 TURBO AB 17, RZR XP 4 TURBO AM/AW/LW/AP 17, RZR XP 4 TURBO Built After 6/5/17 18, RZR XP TURBO 16-18, RZR XP TURBO MD 16, RZR XP TURBO Tractor 17-18, Ball Joint Kit - Upper Polaris RZR XP 1000 14-18, RZR XP 1000 Built After 10/20/15 16, RZR XP 1000 Built Before 10/19/15 16, RZR XP 1000 INTL 15, RZR XP 4 1000 14-18, RZR XP 4 1000 Built After 10/20/15 16, RZR XP 4 1000 Built Before 10/19/15 16, RZR XP 4 TURBO 16-18, RZR XP 4 TURBO AB 17, RZR XP 4 TURBO AM/AW/LW/AP 17, RZR XP 4 TURBO Built After 6/5/17 18, RZR XP TURBO 16-18, RZR XP TURBO MD 16, RZR XP TURBO Tractor 17-18