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

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

Item # RS16933LH
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Trailer Ramp Springs
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Redline Steel Alloy Trailer Ramp Springs - RS16933LH
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Lowest 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 800-298-8924 for expert service.
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Redline Trailer Ramp Springs - RS16933LH

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


  • Left Hand Ramp Spring
  • High quality steel alloy
  • Provides approximately 90 degrees of deflection
  • Measurement of spring legs from coil to tip: 4"
  • Width of coil: 2-1/2"
  • Overall length: 11"
  • I.D. of coil: 1-1/2"
  • Application: 1-1/2" round shaft


NOTE: The bars need to be mounted flat to the surface they are being used on



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 Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (115 Customer Reviews)


- RS16933LH
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. 356439


Comments
Still work great! They gave me a lot more flexability moving equipment without always looking for a hand or trying to raise them myself.
Bill R - 03/20/2018

36137

- RS16933LH
by:

Exactly what I needed. Good price and it was shipped quickly. Online descriptions were thourough. 16617


Comments
Can someone tell me how to install trailer assist springs, please!
-- comment by: David - 07/19/2013

1774

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.

-- Patrick B - 7/23/2013

Comments
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?
-- comment by: kim k - 08/13/2013

1896

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.

-- Patrick B - 8/26/2013


- RS16933LH
by:

We installed spring and lowered ramp. Spring bent and did not assist on lifting ramp anymore. Very disappointed 525056


Comments
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.
-- Heather A - 07/18/2018

41111

- RS16933LH
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. 347825


Comments
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.
Grady P - 03/12/2018

35787

- RS16933LH
by:

891805



- RS16933LH
by: 08/10/2020

859728



- RS16933LH
by:

the service rep was very polite and very helpful. The process was made very simple to order our parts. And the communication was great with delivery and quick! We will use etrailer again for sure. Thanks 816466



- RS16933LH
by:

The torsion spring for our flip up ramps have worked flawlessly for 1 year now. 811897



- RS16933LH
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. 804293



- RS16933LH
by:

Work great. With two springs per 7 foot long ramp I can lift them with 2 fingers easily. Good service from etrailer and fast shipping times 795781



- RS16933LH
by:

Fast shipping g 790570



- RS16933LH
by:

Yep it was just 2-weeks ago I found the box in my shop right where I put it , took it out put it on and it still fit just like the one I lost. Thanks and good job reminding me. 787036



- RS16933LH
by:

Right Product and great delivery! 774168



- RS16933LH
by:

I have always been happy with the items from etrailer and intend to continue buying their products 773609



- RS16933LH
by:

Great fit. Fast delivery. 767995



- RS16933LH
by:

This was the best upgrade to our trailer. Game changer. 767984



- RS16933LH
by:

arrived as advertised 765515



- RS16933LH
by:

Good products, great customer service 764771



- RS16933LH
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 763124



- RS16933LH
by:

Great service , had a problem with a product that was handled very fast !!!!!! 748738



- RS16933LH
by:

A painless experience Michelle the order taker verified everything I ordered and double checked everything, glad I spent the money with them I will buy again. 746898



- RS16933LH
by:

Used for a trailer ramp assist, worked great with a little improvising. 732183



- RS16933LH
by:

Spring was as described and replaced the old one perfectly 715470



- RS16933LH
by:

Not much to add here, I looked up the part on your site, found it and ordered it. Sorry that's all I have, Jim 711109



- RS16933LH
by:

Good buy quick shipping 707264


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Show More Reviews

Ask the Experts about this Redline Trailer Ramp Springs

  • Choosing/Sizing the Correct Trailer Ramp Spring for a Ramp Door
    When selecting ramp springs for a trailer ramp, you will want to know the diameter of your hinge pin and how much space you have available in the hinge. A typical horse trailer or utility trailer ramp uses 3/4 inch hinge pins and would require two ramp springs with a 3/4 inch inner diameter. The ramp springs that we carry fit 1-1/2 inch diameter hinge pins and are designed for use with heavy-duty steel ramps like those on equipment trailers or car haulers. The spring slips over the...
    view full answer...
  • How to Make Raising and Lowering a Heavy Trailer Ramp Easier
    You wouldn't use a spring like # RS16933LH because it produces 2,000 foot pounds of torque and you would not be able to open the ramp. What I recommend is either the Rack'em Double Barrel tailgate assist, # RA-27C. The Double Barrel will reduce a 134 pound ramp to less than 5 pounds and works in both directions and for ramps up to 200 pounds. I linked a video showing how the Double Barrel installs.
    view full answer...
  • Ramp Assist Recommendation for Toy Hauler Trailer
    The ramp spring that we have that would be the closest to what you have is the part # CB250D96SHD that measures 96 inches from end to end and could be trimmed down if necessary. The mounting brackets are 80 inches apart. The installation instructions for this product are recommended for individuals who have experience winding torsion springs. If you have not worked with a torsion spring system before, we recommend contacting a local garage door company to install this system.
    view full answer...
  • How to Choose the Correct Ramp Spring for a Trailer
    A ramp door spring rated for 4k in/lbs of torque is going to offer more assistance than a ramp door spring rated for 2k in/lbs of torque. However, choosing the highest rated door spring available is not in your best interest. If the spring was rated too high then the ramps would more or less have a mind of their own and will be very jerking when lifting and lowering. If the spring was rated too low then it would not offer enough assistance and the ramps would feel very heavy and difficult...
    view full answer...
  • Big Tex Trailer Ramp Replacement Springs
    We only carry the springs for those heavy duty style ramps. For the springs we have the Ramp Spring - 2K Torque for 1-1/2" Shaft - left hand # RS16933LH and corresponding right hand # RS16933RH. The other parts will need to be either straightened or replaced and custom welded into place.
    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...
  • Ramp Lift Springs for a Trailer with a 7 Foot Long and 2 Foot Wide Steel Ramp
    If your 7-foot long and 2 foot wide ramp is heavy enough then you would use ramp springs such as # RS16933LH and # RS16933RH. But each of these springs produces 2,000 foot pounds of torque so they may be way too strong for your ramp. If you can tell me how much the ramp weighs I can determine if these springs would be a good fit. Based on the material and size I am willing to say the ramp is probably too light for this type of spring. Another option that could work for you is the trailer...
    view full answer...
  • Replacement Springs for Ramp Door on Continental Cargo Enclosed Trailer
    I believe you're referring to the # RS16933LH spring, is that correct? These springs aren't meant for an enclosed trailer with a ramp door, they're meant for the very heavy steel ramps you'd typically see on the back of a trailer used to haul heavy equipment like bulldozers. Your best bet would be to use a ramp spring like what you're already using, like part # ERS120D81. Installation of springs like these can be extremely dangerous, due to the tension stored in the spring. If you...
    view full answer...
  • Left Hand Vs. Right Hand Placement of Ramp Springs on a Trailer Ramp
    Right hand side would refer to the passenger side of the trailer and the left hand side would be the driver side. The part # RS16933LH is the left side and the part # RS16933RH is the right hand side. Both of these would work great on a 1-1/2 inch diameter shaft.
    view full answer...
  • Ramp Assist for Heavy Ramps on Trailer
    For your 35 ft flatbed trailer I recommend the Redline Ramp Spring # RS16933LH for the left hand side, and # RS16933RH for the right hand side. These are designed to help lift the ramps on heavier trailers like yours. So long as the hinge pin is 1 1/2" diameter these will work great. They have a 2K lbs tension rating, so as you lift it takes some of the weight off. If your ramps are extremely heavy, you can use more than one on each ramp. I linked the parts mentioned above and a...
    view full answer...
  • How to Determine the Length of Cable to Use on an Enclosed Trailer Ramp Door
    If you lower the ramp door on the trailer you can determine where you would attach a cable. Measure from that point diagonally to the upper corner of the opening, same side, and you would need a cable at least that long. Or, you could measure the height of the opening (A) and the length of the door when opened (B). Then you would multiply (A x A) + (B x B) = C squared. So if the opening and the ramp were both 8 feet tall you would do 8 x 8 = 64 + 8 x 8 = 64 to get 128. Then you would...
    view full answer...
  • Trailer Lift Gate Spring Recommendation for a 120 lb Door
    It sounds like you are looking for Ramp Springs, # RS16933LH and # RS16933RH. Made of quality steel alloy, these springs provide approximately 90 degrees of deflection and are designed to help lift a ramp with 2,000 pounds of torque. These would work great for a ramp that weighs 120 lbs. For lift capacity, the spring is rated at 2,000 pounds torque. This does not mean it would lift a 2,000 lb door. Also as a note, right-side springs have green paint on them and left-hand springs are...
    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...
  • Lift Gate Assist for a Big Tex 50LA Utility Trailer
    The ramp door springs we offer that you referenced like part # RS16933LH are going to be much too heavy duty for the liftgate on your Big Tex 50LA Utility Trailer. They would more than likely causing a floating effect on the liftgate which is not what you want. Instead, I recommend the Gorilla-Lift Utility Trailer Tailgate Lift Assist part # GL1 which will do a much better job of helping with your heavy liftgate after a long day. They are also very easy to install when compared to the ramp...
    view full answer...
  • Dimensions and Lift Capacity of Ramp Spring # RS16933LH
    I contacted our representative at Redline about Ramp Spring, part # RS16933LH. He informed me that the overall length of the spring is approximately 10-1/2 Inches and the width of the spring is 3-3/4 Inches. The measurement from each ear to center of spring is about 5-1/4 Inches, and the spring is made to fit over 1-1/2 Inch bar. The metal rod that forms the spring is just under 1/2 Inch in diameter. I used photoshop to show the dimensions of Ramp Spring, part # RS16933LH, (see picture). For...
    view full answer...
  • Recommended Ramp Torsion Spring for 82-Inch Wide Enclosed Trailer
    The best size of trailer ramp spring for your trailer is going to be the 81-inch dual torsion spring # ERS120D81. This dimension is the end-to-end length as you'll see in the video. This unit consists of two torsion springs on one shaft and it has a capacity of 120-lbs. This spring can be bolted or welded to the trailer header and it comes complete with dual cables and hardware. Please note that this spring is intended to be installed by someone who has experience with torsions springs....
    view full answer...
  • What is Actual Torque Rating for Redline Ramps Springs # RS16933LH and # RS16933RH
    The Redline Ramp Spring you referenced, part # RS16933LH, and the matching right-hand spring, part # RS16933RH, are intended primarily for use on equipment trailers, such as those used to transport a skid loader for example, not for utility-type trailers. These springs have an inside coil diameter of approximately 1-1/2-inches (and are intended for a 1-1/2-inch shaft). The wire diameter as measured with a digital caliper is 0.465 inches. I checked the Redline catalog and with my contact...
    view full answer...
  • Ramp Spring Recommendation for 200 lb Door/Ramp on a 1-1/4 inch Shaft
    For a 200 lb door/ramp that is on a 1-1/4 inch shaft the part # RS16933LH and # RS16933RH would be a great choice. These ramps provide 2,000 lbs of torque which would be needed for a ramp that weighs as much as yours and is as long as yours. The spring is designed for a 1-1/2 inch shaft, but we have checked before and have been told that it will still work fine on a 1-1/4 inch shaft as well.
    view full answer...
  • Will the Ramp Springs Part RS16933LH and Part RS16933RH Work With a 200 Lb Ramp
    Yes, the Ramp Spring part # RS16933LH for the left hand side and part # RS16933RH for the right hand side would work well with a 200 lb ramp. So long as the diameter of your shaft is 1-1/2" you will be good to go.
    view full answer...
  • Availability of Lift Assist for Fold-Out Ramps on Gooseneck Trailer with Beaver Tail
    If your fold-out ramps connect to your beaver tail via a 1-1/2" diameter shaft then we have the 2K Ramp Springs # RS16933LH (left hand) and # RS16933RH (right hand) which you can install to help you raise and lower the ramps. Aside from this we wouldn't have anything to help with ramps specifically.
    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...
  • Availability of Ramp Springs for Utility Trailer Gate
    For your utility trailer the Redline Ramp Spring # RS16933RH (Right Hand) and # RS16933LH (Left Hand) that you were looking at should work really well, as long as their dimensions match your current setup. These springs are designed for a 1-1/2" round shaft and have an overall length of 11 inches. I just recommend measuring your existing shaft on the trailer to ensure these will fit.
    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....
    view full answer...
  • Installation of Trailer Ramp Springs RS16933LH and RS16933RH
    The left and right ramps springs # RS16933LH and # RS16933RH install on a shaft of 1-1/2-inches diameter. The width of the coil is 2-1/2-inches and the overall length of each spring is 11-inches. You can refer to the linked videos and to the linked photo from a customer that shows how these springs need to be installed on the shaft. The springs may not always have a color indicated but the photo shows which goes on which side.
    view full answer...
  • What Size Shaft Fits Heavy Duty 2,000 Foot Pound Ramp Springs
    If stretched far enough the coils in ramp spring # RS16933LH can get a little smaller. A 1-7/16 inch diameter bar could work better but they are designed for a 1-1/2 inch bar so you shouldn't have trouble. This is the left hand side spring. For the right hand side use # RS16933RH.
    view full answer...
  • Can Heavy Duty Trailer Ramp Springs be Used on a Bobcat Trailer
    The ramp spring # RS16933LH does fit heavy equipment trailers that have a 1-1/2 inch diameter shaft (or hinge pin where the ramps pivot). It is a weld on application so I am sure that if your trailer has the proper diameter shaft then you can use these springs. There is a left spring, # RS16933LH, and a right spring, # RS16933RH, and you would not want to mix them up because they would not mount properly to be able to function as they should. These springs are rated for 2,000 foot...
    view full answer...
  • Trailer Ramp Spring for a 5x8 Enclosed Trailer 72 Inches Wide Inside
    Ramp springs such as # RS16933LH would be too heavy duty for your 5x8 trailer. The only other option we carry would be a garage door type of spring system. Since the trailer is 72 inches wide on the inside you would use # 362SA7 which is 77 inches wide and can be cut to length. The torsion spring on this type of set up can be dangerous to work with if you do not have experience with them. that is why we recommend a local overhead door technician perform the installation.
    view full answer...
  • Ramp Springs for Flatbed Car Hauler Trailer with 220-lb Ramp
    For your 82-inch wide ramp whose weight you estimate at about 220-lbs, the 2K ramp springs # RS16933LH and # RS16933RH should work well as long as you have a 1-1/2-inch round shaft to match the springs' inside diameter. If you check out the linked video on these items you'll see that they worked well on smaller ramps that were a bit lighter than your ramp will be. Since the springs provided a bit more tension than necessary in that application they should be perfect for yours.
    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...
  • Horse Trailer Ramp Spring For Helping Lift Heavy Ramp
    What's the diameter of the shaft where your current springs are installed? If they are 1-1/2 inches you could install the part # RS16933LH and # RS16933RH instead of what you have now and you'd have a much more powerful spring. But if the shaft is smaller than that we won't have anything we can recommend.
    view full answer...

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