SuperSprings SSA39 for Isuzu NPR, Mitsubishi Fuso FE-160|FE-180, GMC W3500|4500|5500, Pair

SuperSprings are a unique and patented self-adjusting suspension stabilizing system for vehicles with rear leaf springs, designed to level loads and reduce body roll. SuperSprings provide users extra load support and reduce body roll without compromising ride quality. They are manufactured using a variety of different-sized springs to support multiple applications. All SuperSprings are manufactured in the USA from SAE5160H high-grade, shot-peened steel.• Sold as a pair (left and right)• Maintenance-free• Self-adjusting suspension stabilizing system• 3400-lb. additional load-leveling ability• Reduces body roll up to 30% without compromising ride quality• Works in conjunction with original equipment leaf spring assembly• Adjustable shackles allow installation to suit various needs• Typical installation completed in approximately one hour• SAE 5160H high-grade steel• Shot peened to relieve spring stress and extend product life• Never load any vehicle beyond the manufacturer’s GVWR• Dimensions: 45″ x 8.75″ x 6.5″• Weight: 76 lbs.• Capacity 3400 lbs.