Ramp springs listed as follows:
#629130 black replacement horsepower spring. This spring is currently used on our horsepower ramps.
#629085 aluminum ramp spring. This is used on our current horse trailers. This spring can also be used on other brands of horse trailers.
#629052 large ramp spring. This is our Old style ramp spring. We do not use these on any current trailers. This spring is only used on older models of Logan Coach and other styles of horse trailers. 12" Long X 1 3/4" Diameter.