~(78 lbs. 47X8X10)~ SuperSprings for Ford F-350 Super Duty

SuperSprings are patented self-adjusting suspension stabilizers engineered for vehicles with leaf spring rear suspension systems. They provide extra load capacity and additional handling and control without hardening the ride. SuperSprings install easily and quickly directly over a vehicle's existing rear leaf springs. They work in parallel with the vehicle's existing suspension system and 'kick-in' on demand. This is accomplished via SuperSprings patented tapered spring blade and rolling shackles. The increases in load carrying capacity helps to eliminate vehicle rear-end sag and improves towing capabilities.