EPI Performance Heavy Duty Front Suspension Spring Polaris ATV 250cc-500cc EPI Performance provides a solution for those seeking to enhance the spring rate of their Atv, UTV or Side-by-Side. The springs, crafted from top-tier chrome silicon, offer a weight that's 25 heavier than OE stock springs. This makes them ideal for use with accessories that add weight. Features: Sold each 25 heavier than stock High quality chrome silicon Ideal for use with accessories that add weight (ex. plow, winch, cab, trailer etc.) Spring rate: 101