SuperATV HDRP-1-33-15-002 Polaris RZR 1000 RackBoss Heavy Duty Rack and Pinion Will Fit : Polaris RZR 1000 : 2015+ / Polaris RZR 4 1000 : 2015+ 65% larger housing 15% larger rack gear 5mm thick carbon steel mounting plates Internal Teflon bushing for unmatched longevity