This heavy-duty ramp assist spring is designed to fit onto the ramp hinge shaft (the round horizontal bar that holds the ramp to the trailer body). They can become slack with age & need replacement. These springs will fit on a 1/2 in. diameter shaft. They are made slightly larger, because they will get smaller when torque is applied.
Coils: 18 of .312 stainless steel
Spring body: 1 1/4" W X 5 5/8" L
Tails: 2 1/2" & 4 1/2"
Weight: 1.5 lb. each
Torque: 537 inch pounds @ 125 degrees deflection
*Springs for larger diameter shafts sold also.
This is the only stainless steel spring we sell, and we do not offer custom-sized springs.