Happy to help James, thanks for reaching out! Choosing the right M-3 ramp door spring system really comes down to matching your specific trailer and door. The biggest factor is the weight of your ramp door. The spring system is designed to help lift…
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…
Thanks for your question, Dale! That’s actually a pretty smart way to use these springs. We do have a couple of higher-capacity options that may work better for a heavier shed door: - Part #M326FR – 6-1/2 ft. long and rated for 150 lbs - Part #M346FR…
The cables with the Conventional Ramp Door Springs like part #M394FR are attached to the door via anchor brackets which are included with the kit. I have attached below the excerpt from the install instructions below which goes over the cable…
Yes. The Conventional Ramp Door Spring for 8' Wide Enclosed Trailer #M394FR fits 67-3/4" to 95" wide trailer doors. Your door with the brackets 81" apart falls in this range, so this spring will work well for you.
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…
Hey Rene, so the ramp door springs like the part #M394FR are not all identical in spec and capacity. So what that means is a double spring setup does not mean it's just the same spring on both ends compared to a single spring. This is why the…
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 and cutting the tube to fit your trailer. The #362SA6 fits…
With your over head garage door springs frequently breaking you may not have the correct capacity springs for your door. We have kits that range from 80LBS #M374FR up to 250LBS #CB250D96SHD. The weight rating is not the door weight but the amount of…
Hello Ranieri, thanks for reaching out. You are on the right track here. The Curt Trailer Hitch #C99RV will indeed fit your 2026 BMW X3 M50 with the M Sport package. I was able to confirm this with Curt - it will install normally and properly on that…
Hi Steven; all of our axles are going to have the spring seats mounted underneath. If you can tell me the length of your axle (hub face to hub face measurement), I can see what is available for a replacement. If the spring seat measurement matches…
4 Foot Wide Trailer
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