Coil Drum Dimensions for M-3 Enclosed Trailer Ramp Conventional Spring
Updated 04/14/2026 | Published 04/06/2026
Products Featured in This Question
Question:
what is the dimensions of the coil drums on each end
asked by: Michael
0
Expert Reply:
Hey Michael, I went down to the warehouse to get the measurements.
The cable drums on that M-3 # M386FR spring system are 4 inches in diameter and 2 3/8 inches in width. The exact width isn’t specified because they’re designed to slide and adjust on the shaft to match your trailer setup.
Are you installing these on a Toy hauler, Utility trailer, ATV/Bike trailer?
expert reply by:
James D
0
Product Page this Question was Asked From
Conventional Ramp Door Spring for 8' Wide Enclosed Trailer - Dual Spring - 230-lb Capacity
- Trailer Ramp Springs
- Dual Ramp Spring
- Torsion Spring
- 150 Inch Cable
- 186 - 230 lbs
- Conventional Spring
- 8 Foot Wide Trailer
- 96 Inch Wide Spring
- M-3 and Associates
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Michael
4/14/2026
Yes I am installing on a enclose trailer. In fact I've already ordered and installed this unit and it worked great, the measurements are exactly as you stated. Totally pleased with my purchase and now I can lift the ramp door on my 8.5 x 7' ramp door with one finger and the door stays put in any position. Much better than the stock ramp door spring that only had one spring and was way too small for a trailer that size.