Pro Armor Trailing Arm Protectors Polaris RZR XP / 4 The Pro Armor Trailing Arm Protectors combined with Uhmw sliders relies on the strength of .080 thick aluminum, designed to withstand severe conditions. The contact sides house inserts of the highly resilient Uhmw resin that enhances durability and diminishes friction when navigating through rocks and rough terrains. The sliders kit is inclusive of all installation necessities and is retailed in pairs. It is compatible with both two- and four-seater versions. Features: Heavy-duty rear aluminum trailing arm armor .080 thick construction Features ultra-tough Uhmw resin slider insertson the bottom of the armor to easily slide over obstacles and as an extra layer of protection to the trailing arm armor Sold as a pair Fits rear trailing arms on both two- and four-seater versions