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  1. Trailer Ramp Springs
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  3. Single Ramp Spring
  4. Left Hand Spring
  5. 11 Inch Wide Spring
  6. Steel Alloy
Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH

Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH

Item # RS16933LH
Our Price: $23.91
Trailer Ramp Springs
Shipping Weight: 3 lbs
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Great Prices for the best trailer ramp springs from Redline. Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH part number RS16933LH can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (224)
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  • Videos (2)
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Redline Trailer Ramp Springs - RS16933LH

  • Single Ramp Spring
  • Left Hand Spring
  • 11 Inch Wide Spring
  • Redline
  • Steel Alloy


  • Left Hand Ramp Spring
  • High quality steel alloy
  • Provides approximately 90 degrees of deflection
  • Measurement of spring legs from coil to tip: 3-3/4"
  • Width of coil: 2-1/2"
  • Overall length: 10"
  • I.D. of coil: 1-1/2"
  • Application: 1-1/2" round shaft

Diagram showing dimensions of the spring

Note: The bars need to be mounted flat to the surface on which they are being used.



RS16933LH Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH





Video of Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH

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




Video Transcript for Ramp Springs Review

Speaker 1: Today, we're going to be taking a look at, and showing you how to install ramp springs for the 2000 pound torque rate for inch and a half shafts. The left hand side is part number RS16933LH, and for the right, you'll need part number RS16933RH.Now, these springs are designed to aid you in lowering and lifting these heavy ramps. If you don't have any springs installed, you know it can be quite a bit of a pain. As you're lowering your ramp down, you kind of have to be under it. You don't want to just let it drop .. Well, I guess you can, but you might cause damage to it, and vice versa.When you're trying to lift it up, you're going to lift up the entire weight.

With the springs installed, they've got a 2000 pound tension rating, so as we lower the gate, as we raise the gate, it's going to be much, much easier.Now, this is what I would call a medium/heavy duty utility type trailer. We'll also show you on a very heavy duty utility type trailer, the use of two of them for those much larger ramps, the triangulated style ramps. Those tend to be a lot heavier, so we'll show you that, as well.Just to give you an idea, however your ramp's held in place, you'll want to, of course, unsecure that, and then you'll see our ramp's going to come down much easier. It actually kind of floats there. We'll push that down.

That'll keep it closer to the ground. We can get our equipment on and off, then when it's time to shut them back up, much easier process than what you're probably used to, especially if you don't have springs, or if your current springs aren't in good working order.You can see our old spring. It's become worn, and it's not near as effective as it was. You see how that's pointing off, kind of in that rearward direction It just means it's been fatigued over time, so we're going to be able to replace it with a new spring. It's going to give us much more effect.Now, the left hand and right hand is going to determine which side of the pin you're going to be putting it on.

If you want it on the right side, you want a right hand spring, and if it's going on the left side, you're going to want your left hand spring.To ensure we get years of great service out of the ramp springs, they're made of a high quality alloy spring steel, so they're going to return to their original position for years and years.To ensure you have plenty of room, we're going to go over the specifications of the spring, just to give you an idea about the size. From outside of our spring to outside of our spring, we've got 2 1/2 inches. Inside and inside's going to be about and inch and a half. From the spring itself, to the end of each arm that sticks out, is going to be 4 inches, so you definitely want to keep that in mind, and make sure that you've got clearance for that, and also that, that spring will make contact with something within that 4 inch range.To begin your installation, you'll need to remove whatever's holding in your hinge pin. It's going to be the large inch and a half diameter pin that runs through here.

In our case, we've got a bolt and a nylon lock washer. We're going to use a 9/16 to get that removed.You also want to hang on to your hardware, because you're going to need this to put it back in. It keeps this pin from sliding in and out. You can see our old spring mounted here. We'll move our pin out, and the idea is to free that up. Now, this ramp's going to be very heavy, and when you pull that pin, it's going to want to fall down. You need somebody to give you a hand, or if you can handle it yourself, however you want to do it, just make sure, as you pull this pin, that, that doesn't fall down and hurt you.Now, we can remove that old spring, set it aside, and replace it with our new one. Now, we're going to be putting our spring on the other side. We've got an accommodation for one here or here, so it doesn't matter how you want to do it. Make sure you get it where you need it, though. Then, our gate hinge is going to go right in between there. As we install it, we can place that pin through.Now, as we replace our ramp onto the trailer, and install our pin, of course, we want to ensure that the pin passes through the middle of our spring, and we also want to make sure that the flange on the ramp goes in between the spring and the flange on our trailer.Now, to finish it up, we'll just reinstall the hardware that we removed to take that old one off.As we said, with these really heavy ramps, they look about the same as the other ones, but they're much thicker steel. It really is a problem, when it comes time to lower them. You're going to have to fight it. You're really going to have to put weight into it, and it can be slightly dangerous. If you have anything underneath there without steel toes on, you'll likely run into something. Same way, going up. Just make sure you get a good hold it.Then, you're putting yourself right underneath them, so if you we're to slip or your hand comes off, it can come back at you. Those springs are going to help us out a lot, with that situation.Now, just like before, we're pulling that pin out, although this time, we don't have any keepers to put it in, so we'll slide this one on, just like that, bring the pin in, a little further, we can get our other one put on.After we have our springs installed, there's a huge difference in the operation of our ramp. We'll go through that same process as before. You could see it actually hold my ramp there. At that point, we just need to press it down a little bit. That's going to make it much easier getting our equipment up and on it.Now, to raise it up, it takes a lot less effort, as well.Overall, our ramps are going to be much easier to use, but a big key is, they're also going to be much safer. That'll complete our look at the ramp springs.

Customer Satisfaction Score:


Customer Reviews

Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH - RS16933LH

Average Customer Rating:  4.7 out of 5 stars   (223 Customer Reviews)


by:

These ramp springs really took the work out of raising and lowering my heavy 3 fold ramps needed for a more long and level approach to our 10 ton trailer. I always looked for help when needing to raise them, now I can almost do it with one hand. It took a little work installing them because the old system had to be rebuilt somewhat. I kept the same 1" pins and used a 1 1/16" ID X 1 1/2" OD sleeve for the springs to work on. They were well worth my time. I`d rate this an excellent product.

Bill R.

3/20/2018

Still work great! They gave me a lot more flexability moving equipment without always looking for a hand or trying to raise them myself.



by:

We installed spring and lowered ramp. Spring bent and did not assist on lifting ramp anymore. Very disappointed

Etrailer Expert

Heather A.

7/18/2018

The ramp spring is designed to be used with a 1 ½ round pipe not a square pipe which might cause the ramp spring to bind. You also may want to use more than one spring on heavier ramps.



by:

I think we should have ordered these many years ago. Amazing how just a little extra item can be appreciated at the beginning of and end at unloading time can make the day that much more pleasant. A real pain in the back saver/muscle relaxer. 11#'s of lift effort vs 58#. Why waste the energy doing 58 times two ramps 2 to 10 times a day when you don't have to?



by:

etrailer is our go to quick and easy place to purchase parts and accessories we need for working on customers equiptment. Great service, reasonable pricing, and fast shipping.



by:

Ships fast. Works great



by:

Exactly what I needed. Good price and it was shipped quickly.
Online descriptions were thourough.

David

7/19/2013

Can someone tell me how to install trailer assist springs, please!

Patrick B.

7/23/2013

The Redline Ramp Spring RS16933LH is a replacement spring and is only part of the ramp spring system on a trailer. To use this spring on your trailer you must have ramp hinge with a 1-1/2 inch diameter rod or pipe where the ramp meets the trailer. The spring slips over the rod with the tension of the spring against the ramp and trailer when the ramp is in the up position. The spring should not be welded to the ramp or trailer, the tension and the rod will hold the spring in place. The springs we carry are designed for heavyweight steel doors or ramps commonly found on heavy equipment trailers or car haulers. If your trailer is not set up to accept a hinge spring, a hinge would need to be fabricated and installed.

Kim K.

8/13/2013

7h x 8.5w door with wt. of appx.100lbs. ?how many and what size helper springs will I need to install for appx.20-30lb.force to pick-up?

Patrick B.

8/26/2013

The ramp springs like part RS16933LH that we carry are meant for heavy ramps, not for a 100 lb door. They do make springs like these for trailer ramps that weigh considerably less, but we do not carry them, nor do our suppliers. If you have an enclosed trailer, you might be able to use something like this part, ERS160D96.


by:

They worked



by:

I have a unique project I'm working on that will utilize these ramp springs and provide improved performance once integrated. Excellent product and quick hassle-free ordering and delivery.

Etrailer Expert

Brooke M.

3/28/2023

Unique, you say...sounds intriguing. Do tell!



by:

They were a b**** to put on but got her done by myself works great.



by:

My 16 ft mower trailer is loaded with tools from the shop rebuild so I have been having to use my 20 ft implement trailer to haul my sub compact tractor on when mowing the in-laws yard. The ramps are very heavy which was never a problem for occasional use but doing it multiple times a week was getting old so I went looking for a solution. These springs were easy to install and made all the difference in the world. The trailer is now much more user friendly. Wish I had bought them years ago.



by:

My gooseneck trailer has the extra wide ramps on it. Each ramp covers half the trailer. These ramp springs definitely help raise the ramps. I only wish the fingers (as I call them) were about 2 inches longer.



by:

I haven't installed them yet. But the customer service has been amazing, after a simple mistake was found



by:

I had to have 2 back surgeries, and I was not to pick up hardly any weight for a number of weeks. I had a neighbor help me install the ramp springs. After that I was able to lift the ramps with almost no effort at all. I am very glad I got the springs.



by:

works great .. takes a lot of back ache out of the ramps



by:

Need two on each side… one is not enough



by:

Two points of consideration, first the ramp springs worked great and make a world of difference when lifting my ramps. Second was the instructional video. Which made the install process simple and accurate.



by:

I got what I expected. Thanks for the great service.



by:

The springs are okay, but etrailer is awesome. Super-fast shipping and amazing follow up.



by:

Product was as described & fit was good. Delivery was faster than stated. Will require some mods to trailer to gain the best benefit from springs. Will order from etrailer in the future for my trailer needs.

Grady P.

3/12/2018

Im very pleased with my parts. They were delivered in a timely manner. Once I installed they worked perfectly and will purchase from etrailer with all my trailer needs.



by:

I was very impressed on the lifting pressure of these springs. The lift weight of my ramps were approximately 75 lb. I added 2 springs per ramp and now can lift a ramp with one finger, approximately 5 Lb. They were a very good addition to my 3 axel gooseneck trailer.



by:

Our company installed these to assist with heavy folding ramps on a customer's trailer. They really helped with reducing the effort needed to fold the ramps up from the ground. We used 2 springs per ramp. Great product & great price.



by:

Heavy duty springs worked great. I was thinking about using hydraulics to raise and lower my trailer ramps until I found out about these springs from etrailer.com.

I recommend this product, worked great!!!!!



by:

I purchased these for our paving trailer that has bifold wood lined ramps. These springs did help but the ramps are still two man ramps and I put 5 on each ramp



by:

I installed these on my trailer with a 4' split ramps. They are great as I can pick the ramp up with one finger and move them into place. Great product.



by:

I still have them, sitting on my garage floor, in the original box that I received them in.

They are the WRONG SIZE, and when I wanted to return them (yes, more than 30 days after the purchase), I was advised that they would accept them, but I needed to send them via UPS, and they will deduct about half the price I bought them for, to cover for their shipping.

SO, I am NOT happy, and will never buy from you again... SORRY!


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Show More Reviews

See what our Experts say about this Redline Trailer Ramp Springs

  • Replacement Trailer Ramp Spring Options
    The ramp springs we have include part # RS16933LH for a left hand spring and part # RS16933RH for a right hand spring. These are rated with a 2K torque and fit a 1-1/2" shaft. It does look like the ends of the springs for your application popped out of place so you might try removing the shaft and realigning everything prior to ordering replacements. If you do end up replacing your springs you'll need to make that 1-1/2" dimensions mentioned above matches up. Attached are some review...
    view full answer...
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  • Can Ramp Springs Be Installed On Enclosed Trailer Rear Door To Replace Torsion Springs?
    While we have never installed the Ramp Springs Right # RS16933RH or Left # RS16933LH on an enclosed trailer door we have seen someone install them on a utility trailer. I have included an image below showing their setup You will need to add the bar for the springs to mount on as well as a strong surface for the end of the spring to act on for your enclosed door. This will protect the end of the spring from going through the door since it is most likely fiberglass where the spring would...
    view full answer...
    Image 1 for
  • Replacement Rear Door Spring for 2015 Lance Travel Trailer 2212
    I looked up pictures of the rear door of your 2015 Lance travel trailer toy hauler model 2212 and it appears to use a ramp spring like the part # RS16933LH and # RS16933RH which fits on a shaft diameter of 1-1/2 inch. You would need to measure the shaft of your setup now to determine if it would work. We've also found it will fit on 1-1/4 inch shafts too. We do not have replacement doors at this time.
    view full answer...
  • Replacement Trailer Door Ramp Spring Options
    We do not carry the spring only for torsion springs on trailer doors. But we do carry the replacement assembly. I have included a link to the options for you to the right. Springs # RS16933LH or # RS16933RH would not work since they are designed for very heavy duty trailer ramps.
    view full answer...
  • Can Trailer Ramp Springs # RS16933LH and # RS16933RH Be Width Adjusted
    The Ramp Springs part # RS16933LH and # RS16933RH are designed for trailers just like what you have. The ramps will feel lighter as you raise and lower them but since there won't be tension when the are upright you can slide them in and out to accomodate different widths. I attached a picture of these installed on a trailer that has sliding rams just like yours for you to check out as well.
    view full answer...
    Image 1 for
  • Should Left and Right Hand Trailer Ramp Spring be Used with 200 lb Door
    For a 200 lb door I would recommend using the right hand spring part # RS16933RH with the left hand side as well with part # RS16933LH and you'd be set. With just one spring it would feel lighter but with two it's going to feel considerably lighter and would be much easier to deal with.
    view full answer...
  • How Do the Heavy Duty Ramp Springs Install on a Trailer and Ramp
    Heavy duty ramp springs # RS16933RH and # RS16933LH install on the hinge of the ramp. I have included a picture of what this looks like for you. Not all trailers are exactly the same but this should give you a general idea of how the springs install.
    view full answer...
    Image 1 for
  • Trailer Ramp Springs for a 20 Ton Tandem Axle Trailer
    That sounds like a very heavy duty trailer. For heavy duty trailers there are special ramp springs, # RS16933RH for right hand side and # RS16933LH for left hand side. They fit a 1-1/2 inch diameter shaft or hinge pin. We do not have a pin that large. I have included a link to a video review of the springs for you. The other springs we carry are all lighter duty for enclosed consumer trailers and probably would not be strong enough to fit your 20 ton trailer.
    view full answer...
  • Recommended Ramp Springs for 25 Ton Lowboy Trailer
    I recommend the Redline Ramp Spring - 2K Torque for 1-1/2" Round Shaft for the new ramps on your trailer. You will need the # RS16933RH for the right and # RS16933LH for the left hand side. One spring per ramp should be adequate without overdoing it. However, you will want to secure the ramps with strap or something similar and not count solely on the springs to keep them in the vertical position.
    view full answer...
  • Can Enclosed Trailer Ramp Spring Be Cut Down When Installing
    The Enclosed Trailer Ramp Spring, part # 362SA6 will work great for your Haulmark trailer. This spring is 66-inches long but can be trimmed down to fit the size you need. The spring has universal brackets with 3/8 inch holes and can be mounted on the trailer header. The bracket can be installed by welding if that's the way you need it. You will want to use great caution when installing the cable and adjusting the spring tension. If you are not familiar with how it is done I strongly recommend...
    view full answer...
  • Recommendations For Spring For 200 lb Shed Door 60 inches by 68 inches
    To put a torsion assist spring on your door similar to a garage door, an option is to use a hinge spring like the Ramp Spring - 2K Torque for 1-1/2" Shaft - RH # RS16933RH or left hand # RS16933LH but the tension is not adjustable with that application.
    view full answer...
  • Ramp Springs for Load Trail Trailer that Will Help Lift Trailer Ramps
    For the ramps of your load trail 20 ft trailer we have ramps springs like the part # RS16933RH for the right hand side and the # RS16933LH for the left hand side but your ramps would need to be on a 1-1/2 inch shaft for these to fit. Check out the review video I attached for these springs for you to check out as well.
    view full answer...
  • How Many Degrees of Deflection can the Ramp Spring # RS16933LH Do
    The Ramp Spring # RS16933LH that you referenced can do 90 degrees of deflection easily so they would work well for you. I attached a review video for this product for you to check out as well.
    view full answer...
  • Options for Trailer Ramp Lift Springs for Ramps that Weigh Well Over 100 lbs
    If it's a utility trailer with side rails I recommend you use the part # RS16933LH and # RS16933RH. An alternative if you have the side rails on your utility trailer is # RA-27C as it is designed for helping lift trailer ramps. If you have an enclosed trailer you could use the part # CB250D96SHD as an overhead torsion spring to help lift the ramps. This is rated for 250 lbs capacity for an enclosed trailer ramp.
    view full answer...
  • Availability of Replacement Ramp Springs for 6" Ramp Springs
    The closest springs that we have to what you are looking for are the 4" springs # RS16933LH for the left hand side and # RS16933RH for the right hand side. These are rated for 2,000 ft/lbs and will do a good job at helping you lift your ramps. I would try checking to see what your current springs are rated for as well. If you have an older trailer then it could be that they are simply wearing out but if it is a newer trailer then you may need springs that are more heavy duty.
    view full answer...
  • Is 2K Rating for Redline Ramp Spring is Under a Load
    You are correct that the 2K rating of the Ramp Spring # RS16933LH is for when it has a load on it. I spoke with my contact at Redline about your question and they confirmed this. The inch/pound rating that you mentioned is what I found as well.
    view full answer...
  • 1990 Kingston Trailer Ramp Lift Assist Options
    We have a couple options for trailer ramps springs. The first one will work great if your ramp rides on a 1-1/2 inch shaft. For that you would want the Ramp Spring - 2K Torque for 1-1/2" Shaft - RH # RS16933RH or # RS16933LH. Or we have ramp springs like the Enclosed Trailer Ramp Spring - Dual, 81" Wide # ERS120D81, this spring installs like a garage door spring. There is a lot of tension, so you want to make sure it is installed by someone who knows how to compress these springs and...
    view full answer...
  • Installation Instructions for Redline Left Hand Ramp Spring # RS16933LH
    In addition to watching our video review I attached, to use this spring on your trailer you must have ramp hinge with a 1-1/2 inch diameter rod or pipe where the ramp meets the trailer. The spring slips over the rod with the tension of the spring against the ramp and trailer when the ramp is in the up position. The spring should not be welded to the ramp or trailer, the tension and the rod will hold the spring in place. Note that the Redline Ramp Spring # RS16933LH is a replacement spring...
    view full answer...
  • Redline 2k Torque Ramp Spring Recommendation for a Heavy Barge Door
    The Redline Ramp Spring RS16933LH is a replacement spring and is only part of the ramp spring system on a trailer. To use this spring on your barge ramp you must have a ramp hinge with a 1-1/2 inch diameter rod or pipe where the ramp meets the trailer. The spring slips over the rod with the tension of the spring against the ramp and barge when the ramp is in the up position. The spring should not be welded to the ramp or barge, the tension and the rod will hold the spring in place. The...
    view full answer...
  • Recommended Ramp Door Spring for Zieman Forklift Trailer
    The only heavy duty trailer ramp door springs we offer are the Ramp Springs, part # RS16933LH for left hand or part # RS16933RH for right hand. These springs have the following specs: Measurement of spring legs from coil to tip: 4" Width of coil: 2-1/2" Overall length: 10" Inner diameter of coil: 1-3/4" Outer diameter of coil: 2-1/2" If your existing springs are a match for these or are similar then they will work for you but if not you'd be better off reaching out to the trailer manufacturer...
    view full answer...
    Image 1 for
  • Can a Pace Trailer Ramp Be Adjusted to Open Easier After the Torsion Ramp Spring Cable Breaks
    Since your Pace trailer was using an Enclosed Trailer Ramp Spring and you want the spring to function again, you will need to have a qualified professional work on it, one with experience with torsion springs (like a garage door company). Without the cable and spring in good working order, the ramp will never operate as easily as it did before. That is unless you repair the old spring or install a new one. I have included a link to our springs. You may be able to use Ramp Spring # RS16933LH...
    view full answer...
  • Replacement Spring Options for Horse Trailer Ramp
    The closest ramp springs we have to the photos you sent in are rated for 2K Torque and a 1-1/2" Round Shaft. These come in a Left-Hand # RS16933LH and Right-Hand # RS16933RH fitment but you'll have to confirm whether these specs match what you have or not. Attached is a review video for you to check out.
    view full answer...
    Image 1 for Image 2 for
  • How to Identify Right Versus Left Trailer Ramp Springs
    The right and left trailer ramp springs # RS16933RH and # RS16933LH will install on the passenger and driver sides of your trailer ramp, respectively. Usually right hand springs will have a painted end for identification while left springs do not.
    view full answer...
  • Trailer Ramp Spring for 1-1/2 Inch Diameter Shaft
    We do not have springs for 1-3/4 inch shafts. But for a 1-1/2 inch shaft you can use spring # RS16933RH for the right side or # RS16933LH for the left side. These are meant to be welded on at the straight parts of the springs. Other than these two springs we do not have any others for a 1-1/2 inch or any for 1-3/4 inch shafts.
    view full answer...


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