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Conventional Ramp Door Spring for 5-1/2' Wide Enclosed Trailer - Single Spring - 120-lb Capacity
M-3 and Associates

Conventional Ramp Door Spring for 5-1/2' Wide Enclosed Trailer - Single Spring - 120-lb Capacity

Part Number: M358FR
In Stock
$220.21
Trailer Ramp Springs
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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 38"- 69" wide, this durable system ensures safe, reliable performance. Great Prices for the best trailer ramp springs from M-3 and Associates. Conventional Ramp Door Spring for 5-1/2' Wide Enclosed Trailer - Single Spring - 120-lb Capacity part number M358FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (66)
  • Q & A (0)
  • Videos (1)
  • Photos

M-3 and Associates Trailer Ramp Springs - M358FR

  • 4 Foot Wide Trailer
  • 5 Foot Wide Trailer
  • 6 Foot Wide Trailer
  • Single Ramp Spring
  • Torsion Spring
  • 86 - 120 lbs
  • Conventional Spring
  • 69 Inch Wide Spring
  • 150 Inch Cable
  • M-3 and Associates

Upgrade your trailer with this heavy-duty ramp spring. It provides smooth operation, reduces strain, and prevents freefalls. Designed for enclosed trailer doors 38"- 69" wide, this durable system ensures safe, reliable performance.


Highlights

  • Easy operation: Effortlessly lift/lower trailer doors without injury risk.
  • Adjustable fit: Designed for 38" to 69" wide doors; customizable by trimming.
  • Robust construction: Made of sturdy steel; holds a 120 lb capacity.
  • Enhanced durability: Reduces wear on door hinges, prolonging door life.
  • Comprehensive kit: Comes with necessary brackets, excluding mounting hardware.
  • Safety feature: Includes a 150" cable length for versatile installations.

Features to know about

Injury-Free Door Operations: Heavy-Duty Ramp Door Spring

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.

Customizable Fit for Any Trailer: Adjustable Spring Length and Design

Have a trailer with an unusual width? No problem! The spring fits doorways ranging from 38" to 69" 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.

Built to Last: Sturdy Steel Construction

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.

Quick and Smooth Installs: Fully Adjustable for Your Setup

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.

Reliable Lifting Power: Consistent 120-lb Force

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.

Space-Saving Solution: Compact Dimensions

Need a spring that performs without taking up too much space? Measuring at 69" 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.

Specs

Application:

  • 38" to 69" wide trailer door

Dimensions:

  • 69" wide x 4-7/8" tall x 7-1/2" deep

Capacity

  • 120 lbs

Cable

  • Length: 150"

Note

  • It is recommended that only individuals who have experience winding torsion springs install this product.
  • If you have not worked with a torsion spring system before, we recommend contacting a local garage door company to install this system.


9500624-ET M-3 Enclosed Trailer Ramp Conventional Spring - Single Spring - 120 lbs - 67"





Video of Conventional Ramp Door Spring for 5-1/2' Wide Enclosed Trailer - Single Spring - 120-lb Capacity
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of M-3 and Associates Trailer Ramp Springs - Single Ramp Spring - M358FR

Hi, everyone. Steve here with etrailer.com. Let's take a look at our Conventional Ramp Door Spring for five and a half foot wide enclosed trailer doors. Now folks, this is considered a single spring, and it's rated for 120 pound capacity. So with this spring system, you're gonna be able to effortlessly lift or lower those trailer doors without having to worry about injuries or risk. Now, this is adjustable to fit between 38 to 69 inch wide doors, meaning you can cut the bar down to fit whatever you need by simply cutting it down.

All the instructions you're gonna do that. This is made of a sturdy steel construction. Obviously you have the whole spring here, the two safety cables, the hardware, and the two main brackets and everything here. Those will go around the bar, and then of course you have this safety. Once everything is tightened up to warn people, "Hey, you know, don't take that off or remove unless you know what you're doing.

So sliding this over, you'll get a better view of that whole tightening mechanism. And if you're not familiar with these, you basically have to put a bar in here, spin this to set the tension one way or another. Again, it's a very dangerous thing. Make sure you know what you're doing if you're gonna tackle that yourself. Otherwise, I recommend finding a local garage door specialists in your area maybe that can do that for you.

Those cable lengths are 150 inches long, and again, everything is here that you need to do your install. That's gonna wrap it up for a quick look together, folks. I'm Steven. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.7

66 reviews
Review sort icon
Upgrade your trailer with this heavy-duty ramp spring. It provides smooth operation, reduces strain, and prevents freefalls. Designed for enclosed trailer doors 38"- 69" wide, this durable system ensures safe, reliable performance.

by:

Great product, I can now lift my toy hauler door with just 2 fingers.



by:

Good product, came in time and saved my back from having to lift my 8.5 ramp door.



by:

Thank you for the great service



by:

Very satisfied with the ramp door spring assembly. Extremely fast shipping. I was hesitant about installing it myself but only took about an hour and a half to remove and install the new one.
Excellent product!



by:

etrailer is an absolute pleasure to deal with. i will buy all of my trailer needs from them. great prices, fast shipping. thanks again. 5 stars for sure



by:

Awesome. Quick. Exactly what we needed.



by:

Easy installation / head ache free /



by:

Right on time Fit good



by:

Wow, super fast shipping, and emails to......thank you very much.....I'll be installing very soon......



by:

This item is absolutely perfect. Your customer service is immaculate. Adam E. is the best. He was very informative and understanding. We need more companies to have this type of customer service and great products at great reasonable prices. Thank you all soooo much especially Adam E.



by:

Came completely assembled in box which helped a lot. Took old one off, put new one on and had it adjusted in 45 minutes.



by:

The pin wouldn't go through the cable hole when it was bolted to the door other than that it works very good



by:

Works great.



by:

Overall worked with some modifications. Pictures show different brackets than what came in package. Actual brackets are not as sturdy and missing middle one. Had to order different brackets because these would bend when ramp was opened. Not sure why the picture shows 3 when it only ships with 2. Must be an update to save some money. Wish I would have know before purchasing. Once installed, springs did their job and trailer ramp is easy to open and close.



by:

Perfect fit worked great



by:

Very good company to work with. Very ha ppy



by:

We bought this to replace the old one on the trailer door. One of the springs on the old one snapped. We had to make a few modifications for a perfect fit. Very happy with this product!!



by:

Works great!



by:

Every one that I spoke with was very helpful in making sure that I received the correct part. The part was delivered very promptly. Cody was extremely helpful.



by:

detailed installation instructions would be helpful, also why the red paint on both sides?



by:

Very pleased with the company and the product when it was originally delivered there was a few pieces that were missing. The box was tore up so they may have fell out, but regardless the company sent me new ones right away. Excellent customer service.



by:

Not as Robust as Expected . . . First, the instructions included with the door spring are sparse, with small print and poor quality photos. The mounting brackets are weak and bend under load. This required welding gussets to prevent the entire assemble from moving axially 1/2 inch. The rod is weak and bends under load which required the fabrication of a center support on the shaft. Lastly, the cable bracket placement data was one-size fits all - which is not the case for different doors. This required moving the bracket placement from 18 inches to 30 inches from the top of the door. This was required to prevent the cables from falling of the spools with the door closed. I was going to give the review 3 stars but after writing this review, I'm changing it to 2 stars.



by:



by:

Great customer service



by:

Works great on my shed door/ramp. Couldn’t be easier to lift the ramp.


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See what our Experts say about this M-3 and Associates Trailer Ramp Springs

  • Can Caliber EdgeGlide Be Used Between Ramp Door and Trailer Floor
    Hey Cyndi! Are you asking if you can use the Caliber EdgeGlide 2.0 Transition Plate for Enclosed Trailers # CA47EJ between the door and the floor of the trailer? You certainly can! Both of those locations are acceptable for installation/use. I attached some photos below showing the transition plate installed at either end of the ramp door. Are you using these for a snowmobile or something else?
    view full answer...

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Steven C
Installed by:
Steven C

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