These heavy-duty ramp assist springs are designed to fit onto the ramp hinge shaft. They can become slack with age & sometimes need replacement. These springs will fit on a 1" OD" diameter shaft. They are made slightly larger, because they will get smaller when torque is applied. When you are standing behind the trailer looking at the ramp, the left-hand springs are on your left, the right-hand springs are on your right.
Coils:11 of 7/16" steel alloy
Spring body: 2 1/8" W X 5" L
Tails: inside: 5 1/2" L--outside: 5 1/8" L
Weight: 2 lbs, 15 oz. each
Torque: 3278 pounds/inch
*Springs for larger diameter shafts sold below.