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Upgrade your trailer with this heavy-duty ramp spring. It provides smooth operation, reduces strain, and prevents freefalls. Designed for enclosed trailer doors 40"- 82" wide, this durable system ensures safe, reliable performance.
Dealing with heavy trailer doors can be a hassle and risk injury, but the Conventional Ramp Door Spring makes it a breeze. With a spring capacity of 120 lbs, it takes on the weight of your trailer door, allowing you to lift and lower it with ease, so you dont have to strain your back.
Have a trailer with an unusual width? No problem! The spring fits doorways ranging from 40" to 82" wide. You can slide the bracket and cable drum down and trim the shaft to your required length, ensuring a perfect fit for your specific trailer setup.
Worried about constant wear and tear? This spring is crafted from robust steel, designed to withstand the rigors of frequent use. This reliable build minimizes wear and helps prevent damage to door hinges, maintaining a smooth function over time.
Installation has never been easier. Enjoy a straightforward setup thats been highly praised by customers for its efficiency. The system can be modified to suit various applications, and even if complex, adjustments are managed seamlessly.
Every time you open your ramp, you benefit from a steady 120 lbs of lifting power throughout the entire range of motion. Its engineered to make flipping your ramp a one-person job, making heavy lifting a thing of the past.
Need a spring that performs without taking up too much space? Measuring at 82" wide x 4-7/8" tall x 7-1/2" deep, this compact design efficiently fits into your trailer space, allowing you to maximize every inch for your hauling needs.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everyone, Steve here with etrailer. If you've ever wrestled with a heavy enclosed trailer ramp door, you know just how quickly opening and closing it can become a workout. And if that door ever gets away from you, it can become a serious safety issue as well. So folks, we're looking at this conventional ramp door spring for a six and a half foot wide enclosed trailer. Now this spring has 120 pound capacity. It doesn't mean your door can only weigh that much.
It's just saying that it has that much capacity of assistance. Now one of the biggest advances of this spring system is what we call an adjustable fit. So this will work for doors between 40 inches all the way up to that six and 1/2 foot wide. And this is gonna be great for narrow applications. The brackets and the cable drums can be repositioned wherever you need 'em on the bar.
If you need to cut the bar down short, you can certainly do that. You do get the cables, the safety warning bracket, and all the bolts, nuts and hardware and instructions needed for the install. Now that being said, we highly recommend that you get this installed by someone with experience with winding these torsion springs because these can really snap back and hurt you really easily. So again, highly recommend you get these installed by a professional. You can use our install locator link below, click on that link and we can help find trusted etrailer installation locations in your area based on your zip code.
Now this cable I talked about, it's about 150 inches long, so that's plenty of length for different installation setups. And the spring system uses sturdy steel construction. So this main big steel spring here is gonna be assisting the weight of your ramp. It's also gonna help reduce the stress and wear of the trailer door and hinges over time. And as I said before, you can cut this down to any length that you need.
And it's about four and 7/8 inches tall overall as far as these rollers and the spring system. Now this roller here, if you don't already know, the cable's going to be wrapping around right here on these grooves whenever you're opening and closing that back door. So again, folks, highly recommend you get a professional to install it. This is our look at the conventional ramp spring door for up to six and 1/2 feet wide. I'm Steven. Thanks for watching.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Nick S.
11/17/2025
Instructions for these are not included due to the fact that it is only recommended to have this installed by a professional. It is not recommended to DIY this install for safety reasons. As to the paint, that is just something from the manufacturer for better identification of products.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Ken
10/2/2026
It’s been a year since my purchase and install and I couldn’t be more satisfied with Etrailer’s customer service and products. The door spring still works as good as it did when I installed it and I use it several times a day, five days a week. I have been so proud to recommend others that I know to purchase from Etrailer.