High Lifter Lift Springs are a set of higher capacity replacement springs which are components of the stock shock absorbers. The original equipment spring is not heavy duty and is often fatigued early by heavy loads or continuous service. OEM springs tend to fatigue rapidlyeven with low mileage. The High Lifter Lift Springs were engineered to provide about 100 additional pounds of capacity (per set) over the new stock springs. They were also designed to make a significant difference in the performance of your ATV with as little affect as possible on the ride and handling of the machine. The Lift Springs add some stiffness to the ride and decrease roll, but have not been found harsh or uncomfortable by anyone who has ridden them. And heres a big bonus! A complete set of the Lift Springs may be installed for substantially less than the cost of one replacement OEM shock. For those who ride at slower speeds, with big tires and heavier loads, the Lift Springs will be a welcome and economical upgrade. Depending on the make and modeland current modifications to the unit, the High Lifter Lift Springs have been known to add on full inch of suspension lifthowever, its not guaranteed. The Lift Springs add some stiffness to the ride and decrease roll, but have not been found harsh or uncomfortable by anyone who has ridden them. One thing is for sure. If you are a hardcore mud rideror you carry a loadyour ATV could stand a heavier load capacity. The High Lifter Lift Springs are just what the doctor ordered!