This spring is for the Forest River Lift System that used on Rockwood and Flagstaff trailers primarily from 1994 and older. There are a few exceptions, but if the system uses bicycle chain, this is the system you have.
Over the years, the springs length and features of the spring have changed so please be sure to indicate which corner(s) you are replacing along with the Year, Make, Model and VIN.
We have a complete line of lift system parts and diagrams. Call us for details! 1-800-232-2079