Polaris ATV New OEM Sportsman Heavy Duty Front Suspension Springs Kit 2876153 Fits 2005-2008 Sportsman models These Heavy-Duty Front Suspension Springs have a spring rate of 128 lb./in. Help a Sportsman's front suspension deliver optimal performance in all conditions They are stiffer than stock springs and are ideal for any Sportsman carrying a heavier load such as a plow blade, and for riding over extreme terrain They also help increase lift during plowing snow.