bing tracking image
Customer Service My Orders
  1. Trailer Ramp Springs
  2. M-3 and Associates
  3. 4 Foot Wide Trailer
  4. 5 Foot Wide Trailer
  5. 6 Foot Wide Trailer
  6. 7 Foot Wide Trailer
Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity
Add to Cart
M-3 and Associates

Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity

Part Number: M374FR
99 Reviews | 9 Questions
In Stock
$172.68
Retail:$181.43
You Save: $8.75
 Trailer Ramp Springs
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

m-3 and associates trailer ramp springs torsion spring 77 inch wide m374fr
m-3 and associates trailer ramp springs single spring torsion
m-3 and associates trailer ramp springs single spring torsion conventional door for 7' wide enclosed - 80-lb capacity
m-3 and associates trailer ramp springs single spring conventional m374fr
m-3 and associates trailer ramp springs single spring conventional door for 7' wide enclosed - 80-lb capacity
m-3 and associates trailer ramp springs single spring torsion
m-3 and associates trailer ramp springs torsion spring conventional
m-3 and associates trailer ramp springs single spring 77 inch wide
m-3 and associates trailer ramp springs conventional spring 77 inch wide m374fr
m-3 and associates trailer ramp springs single spring 77 inch wide conventional door for 7' enclosed - 80-lb capacity
m-3 and associates trailer ramp springs torsion spring conventional m374fr
m-3 and associates trailer ramp springs torsion spring conventional
m-3 and associates trailer ramp springs single spring conventional door for 7' wide enclosed - 80-lb capacity
m-3 and associates trailer ramp springs single spring torsion conventional door for 7' wide enclosed - 80-lb capacity

Show All (14) Product Images

Show Fewer Product Images

Customer Photos

Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity customer photo
Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity customer photo
Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity customer photo

Show All (3) Customer Images

Show Fewer Customer Images

Videos

Show All (1) Videos

Show Fewer Videos

Need help with installation?
Locate installers near me
Replace your old trailer door spring with this heavy-duty, conventional ramp door spring. This single-spring setup lets you easily open and close the ramp door on your enclosed trailer. Fits 40" to 79" wide trailer doors. Great Prices for the best trailer ramp springs from M-3 and Associates. Conventional Ramp Door Spring for 7' Wide Enclosed Trailer - Single Spring - 80-lb Capacity part number M374FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (99)
  • Q & A (0)
  • Related Parts
  • Photos

M-3 and Associates Trailer Ramp Springs - M374FR

  • 4 Foot Wide Trailer
  • 5 Foot Wide Trailer
  • 6 Foot Wide Trailer
  • 7 Foot Wide Trailer
  • Single Ramp Spring
  • 85 lbs or Less
  • Torsion Spring
  • Conventional Spring
  • 77 Inch Wide Spring
  • 150 Inch Cable
  • M-3 and Associates

Replace your old trailer door spring with this heavy-duty, conventional ramp door spring. This single-spring setup lets you easily open and close the ramp door on your enclosed trailer. Fits 40" to 79" wide trailer doors.


Features:

  • Ramp door spring lets you easily lift and lower the door on your enclosed trailer without risk of injury
    • Helps take on the weight of your trailer door so you don't have to
  • Spring reduces wear and helps prevent damage to door hinges
  • System can be modified to fit your specific application
    • Slide the bracket and cable drum down and cut the shaft to a shorter length
  • Orange safety covers install on top of the bolt heads to prevent any unwanted adjustments
  • Sturdy steel construction
  • Made in the USA


Specs:

  • Application: 40" to 79" wide trailer door
  • Dimensions: 79" wide x 4-3/4" tall
  • Spring capacity: 80 lbs
  • Cable length: 150"
  • 1-Year limited warranty


Warning: 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.



9500472 M-3 Enclosed Trailer Ramp Conventional Springs - Single Spring - 80 lbs - 77"

CB80S77S







Customers Who Purchased This Trailer Ramp Springs Also Bought...





Customer Satisfaction Score:

Ratings & Reviews

4.6

99 reviews
5 Stars
(79)
4 Stars
(10)
3 Stars
(4)
2 Stars
(2)
1 Star
(4)
Review Sort Icon
by:
When the part arrived we noticed that one of the parts was broken. My wife looked at our ring camera and noticed the delivery driver threw the box on our porch carelessly.
Customer Large Image
Customer Image
Click to Enlarge
by:
I installed the spring kit this PM. Works great! I extended one bracket to make it work (welded a flat on the mount side). I set the spring at 8 turns and backed it off 1/2 turn to get the assist I wanted. Easy peasy!
Mike
by:
Great spring for my 4 ft door on a small mc trlr! It arrived w a damaged roller n you quickly sent a replacement! I had a friend who installs garage doors to install it for me and it works perfectly! Thank you! The door was getting a little too heavy for me to safely lift.
Customer Large Image
Customer Image
Click to Enlarge
Customer Large Image
Customer Image
Click to Enlarge
Great S. profile picture

Great S.

6/1/2024

The spring is working great! So much easier getting in and out! Effortless! Thank you e-trailer!

by:
Because it's taking 3 times to get my order things where missing the first shipment then the second shipment didn't have all of it now the other thing is on back order not pleased with this company
by:
It would not fit my type of trailer , I tried to explain this prior to ordering but no one would listen.
Mr Doug Wait the owner of the company got involved after I couldn’t make it work, he was awesome and very straight forward , about the installation. I would never hesitate to buy
His products if they were adaptable to my install!
by:
I bought this to retrofit an enclosed trailer that was originally built with exterior springs.
This is a major improvement over the other style and money well spent. Everything went smoothly according to the instructions. I was good at 38.
My door is now a "one hand wonder".
David profile picture

David

2/23/2023

All is good. I havent used it much, but when I do I like it.

by:
Excellent service. My original order had some damaged parts. I inquired about a replacement and they sent out the damaged parts right away. Excellent service and follow up. Great products with great expertise. Very easy to replace a damaged trailer door spring. Bolt on and go.
by:
Is a great replacement part for on of our enclosed trailer. Had it a year now and no issues. Thanks etrailer!!
Fischer profile picture

Fischer

11/4/2024

After a year, or more, still works great and no sings of wear. Excellent product and again at a competitive price.

by:
Took less than 4 hours to fit and install. I added a ramp to a double door cargo trailer was a strain to close until I added this spring now can close with ease. Perfect for my now motorcycle trailer
by:
The installation instructions wasn't very detailed. The front and back of the instruction sheet were for double springs and I had ordered single spring. Figured it out and it works great.
by:
Fast shipping, good people too do business with, just give them a a call they will help anyway they can thanks for everything
by:
Ships fast always accurate items
by:
Exactly as described. I was concerned because processing of order took so long according to the order tracking but it did arrive on time as promised and installed fairly easily.
by:
This product worked great! I just got installed last night on a ramp door that I built for a shed. No problem and everything functions well. No problem winding it just watch a couple videos first and be very very careful
by:
Got package which was opened ,,, Missing the main brackets and need 8 ft assist ramp helper
Jenny N. profile picture
Etrailer Expert

Jenny N.

7/27/2022

Thank you for letting us know about the missing brackets. I will have our customer service team reach out to assist.

by:
It was what ordered, had all parts that was needed & arrive in a reasonable time.
by:
Not happy at all. I had to use old part to make the installation complete. Extremely poor packaging caused the broken part.
by:
The spring was great but the cables were too short.
by:
It was the right size and weight capacity, easy to install. So far no problems
by:
The Spring I purchased broke after 6 months,
Katrina D. profile picture
Etrailer Expert

Katrina D.

8/8/2023

I am sorry to hear that this broke for you. Luckily this does have a 1 year limited warranty.

by:
by:
by:
great product and easy to install
by:
by:
25
99
true
Show More Reviews

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

Do you have a question about this Trailer Ramp Spring?

Do you have a question about this Trailer Ramp Spring?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob H
Installed by:
Jacob H
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Jonathan Y
Video Edited:
Jonathan Y
Employee Mike S
Written by:
Mike S

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.