Trailer Ramp Springs - 80 lb Capacity

The spring with the black cable drum should always be mounted to your LEFT, standing on the inside of the trailer looking out. This is very important for proper operation. Dual spring systems, like #ERS160D96, have a red-coned and a black-coned…

To test the weight of your ramp door, you will want to get the door all the way down to the ground and then on a scale of some kind (a bathroom scale can be used for this if it's the only thing available). This will be when the door is at its…

To determine the correct weight springs you will need a scale to determine how much weight is on the door when it lays out on the ground. You will place the scale on the ground in the center of the landing path of the door edge. This will tell you…

Your broken spring should be color coded to indict the weight rating of it. It'll be spray painted on the roller or the spring itself. I've listed the colors and their respective weights below; White: 10/110/210 LBS Green: 20/120/220 LBS…

Jared, the 150" long cables that come with the Conventional Ramp Door Spring for 8' Wide Enclosed Trailer #M354FR are unfortunately the only size offered with that part. What you could do instead, is buy the Replacement Cables for…

For a 200 lb trailer ramp door we have the Conventional Ramp Door Spring part #362SA8HD which would work great as it has a 230 lb capacity. You'd need to have a professional wind it for you but it would easily work great for a 200 lb trailer ramp…

You won't need to obtain the weight of the entire door, just the un-hinged side. You'll want to find the amount of weight you'll need to overcome to easily lift the door. You could use an old bathroom scale, place some blocking on it, and…

Jared, the Replacement Cables for Conventional Ramp Door Spring #M339FR is not going to work with the Conventional Ramp Door Spring for 8' Wide Enclosed Trailer #362SA8207 but it does work with the Conventional Ramp Door Spring for 8' Wide…

...For a 6' wide trailer we have the 120lb capacity # 362SA6 and 80lb capacity # M364FR ramp door springs from M-3. Both of these options can be shortened by sliding the mounting bracket down...

For your cargo trailer with a 94" wide door that weighs about 140lbs you'll need to go with the Conventional Ramp Door Spring #362SA8207. This is designed for doors your size, and has a 150lb capacity which will be perfect for your door…

I'd go with a double spring personally, Scott. These are typically going to be used on more heavy duty applications like your enclosed trailer with a pretty heavy door. In order to get a proper replacement though, you'd need measure the width…

The 120-LB #M354FR is going to likely be a better option with the door weight between 125-130lbs. While the 150-LB #362SA8207 will work the higher weight will make the door want to raise up off the ground which can be troublesome when trying to load…