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  1. Trailer Leaf Spring Suspension
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Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs

Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs

Item # K71-449-00
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Trailer Leaf Spring Suspension
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Dexter Axle Equalizer Upgrade Kit Trailer Leaf Spring Suspension - K71-449-00
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Suspension kit includes equalizers and hardware for attaching 4 leaf springs to the hangers on your trailer's frame. Works with 35" axle spacing. Built-in grease zerks for easy lubrication. Heavy-duty shackle straps ensure strength. Lowest Prices for the best trailer leaf spring suspension from Dexter Axle. Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs part number K71-449-00 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Dexter Axle Trailer Leaf Spring Suspension - K71-449-00

  • Equalizer Upgrade Kit
  • Equalizers
  • Double Eye Springs
  • Tandem Axle
  • Dexter Axle

Suspension kit includes equalizers and hardware for attaching 4 leaf springs to the hangers on your trailer's frame. Works with 35" axle spacing. Built-in grease zerks for easy lubrication. Heavy-duty shackle straps ensure strength.


Features:

  • Suspension kit lets you attach 4 leaf springs (sold separately) to your trailer frame
    • Works with 1-3/4" wide double-eye springs
    • Hangers sold separately
  • Equalizers transfer load and impacts from one axle to another by permitting movement between the axles
    • Springs attach to ends of equalizers with included hardware
  • Wet bolts secure equalizers and springs to the hangers on your trailer
    • Grease zerks allow for fast, easy lubrication to keep moving parts functioning at their best
  • Heavy-duty shackle link assemblies with bolts secure springs to equalizers
    • 1/2" thick links are thicker than standard straps for greater durability
  • Bushings fit into spring eyes to help maintain a well-functioning system and ensure proper sizing for suspension bolts
    • Bronze construction resists corrosion
  • Kit includes:
    • 2 Equalizers
    • 8 Shackle strap assemblies - shackle straps with wet bolts
    • 4 Wet bolts with zerk fittings
    • 2 dry bolts
    • 8 Bronze bushings
    • 14 Flange nuts


Specs:

  • Application: tandem-axle trailers with 1-3/4" double-eye springs
  • Axle spacing: 35"
  • Equalizer dimensions: 2-7/8" tall
    • 7-3/4" Long from center-hole to center-hole
  • Shackle strap length: 2-1/4" from center hole to center hole
  • 5-Year limited warranty


Dimension1Dimension2Dimension3

K71-449-00 Dexter Axle Heavy Duty Suspension Kit for Tandem Axle Trailers - 1-3/4" Wide Double-Eye Springs






Customer Reviews

Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs - K71-449-00

Average Customer Rating:  4.8 out of 5 stars   (82 Customer Reviews)

Suspension kit includes equalizers and hardware for attaching 4 leaf springs to the hangers on your trailer's frame. Works with 35" axle spacing. Built-in grease zerks for easy lubrication. Heavy-duty shackle straps ensure strength.

- K71-449-00
by:

Fit up perfectly. Split the old nuts using a right angle grinder with a cutting wheel. Heated the spring enough to soften the plastic bushing and allow the bolt to be pounded out with a hammer. I used an 11/16 drill bit to remove rust and debris from spring end and used a c-clamp to press in the new bronze bushing. Everything else went together like the instructions said. Attached a before and after photo.


Comments
Working great
Eugene M - 07/22/2020


- K71-449-00
by:

The product looks very good and very heavy duty. I’m looking forward to putting it on in a couple of weeks. I did this to my last RV which was a triple axle and it made a world of difference as far as noise was concerned from the suspension etc. Once or twice a year I’ll be Grease the Zerk fittings no noise at all.



- K71-449-00
by:

I installed RoadMaster slipper spring with shocks in November 2019 and I love it works great was an easy install should be a factory option. Install on my 2014 Heartland Big County 5th wheel no more bounce



- K71-449-00
by:

The heavy duty suspension kit was great. My only disappointment was that one equalizer didn’t have the grease zirk installed on it. The company immediately sent me a new equalizer. I am very happy with their service and support.



- K71-449-00
by:

Fit perfectly. The Dexter equalizer has longer than the stock one but wasn’t and issue. In fact it actually raised my cargo trailer about an inch. Love the Zerk fittings when it comes to maintenance. I only have one negative thing to say. Dexter should consider protecting the instructions a little better. Placing them in the bottom of the box with the parts on top is not a very good idea. It make for some difficult reading.



- K71-449-00
by:

I think that was the best thing I could've done by changing out the suspension on my trailer .My trailer is a whole lot quieter to pull now.No problem yet. Good product .


Comments
The over haul of the suspension on my trailer is still doing just fine .I greased zerk fittings because I could where I couldnt with oem parts but they didnt any grease .Im still very happy with the purchase from etrailer.
C.Bic - 10/18/2021


- K71-449-00
by:

2nd packaging worked much better with the extra box. 1st packaging was just the box the product came in, broke open, lost contents. Customer service handled it well.



- K71-449-00
by:

The expensive units did not hold up on a 5 ton dump trailer for me any better than a cheap set.



- K71-449-00
by:

I wish i would have done this sooner. The factory parts didn’t accommodate easy grease, much better and set for a lifetime.



- K71-449-00
by:

Very happy with the quality of the product. Have used it for over a yr now with about 5k miles on them with no complaints. I recommend this product



- K71-449-00
by:

Wow. Heavy duty!!! Excellent upgrade! Grease quiets transitions. Easier to Change than I thought. Remember that the bolts are pressed (hammered) in and must be driven out!



- K71-449-00
by:

I have not had time to install parts yet but just joking at them I am impressed at how much more heavy duty they are compared to stock hangares



- K71-449-00
by:

Perfect fit. Much better than what was originally on there. The photos show an old linkage compared to a new one.



- K71-449-00
by:

Easy to install. The grease able feature is very nice too. Go for it!


Comments
Still Good
Carlos A - 02/18/2021


- K71-449-00
by:

the FAQ section was and is a huge help. Who ever dreamed that up needs the employee of the week front row parking spot for a month.



- K71-449-00
by:

Was exactly what it was supposed to be, couldn’t be happier with the purchase!!



- K71-449-00
by:

Great upgrade to your trailer suspension. The equalizers on my trailer were froze and would not move, I had to heat the bolts until the plastic bushings melted, then drove the bolts out. In doing so this left a fair amount of crud inside the spring eyes, I had access to an 11/16" hand reamer so I ran it through the spring eyes, then the bushings slid in with a nice snug fit, and in doing so I did not experience distortion inside the bushings like others have mentioned. I was disappointed to find that the equalizer center pivot bolt did not come with a new nut. The kit shows enough nuts for all the bolts but the nuts only fit the wet bolts. If the kit had included the two 9/16"-18 nuts I would have given 5 stars.



- K71-449-00
by:

Ah.. now I can tow with confidence knowing my axles are once again equalizing and sharing the bumps as they should be. With the grease-able fittings I also know this is continue for years to come. Feels very heavy duty, trailers well on the trips I've taken so far. Installation was very easy, though to use the brass bushings in the springs I had to drive out the nylon bushing that came in the new springs. This was easy to do with bolt of the right size and the brass bushings -- just tap tap tap and the nylons were pushed out by the brass, all guided and kept aligned with the bolt.



- K71-449-00
by:

A few thousand miles and still pivots smooth. I grease twice a year.



- K71-449-00
by:

The parts where excellent the kit is great the people where very helpful it went together very easy the grease fittings are great you don't have to take it apart to grease it


Comments
so far so good. would recommend you and your parts to everyone.
Dave O - 06/06/2019



- K71-449-00
by:

The products I ordered arrived ahead of schedule and fit perfectly! The only complaint I have is the packaging. All the components (4 leaf springs, suspension kit, and u-bolts were just thrown into an over sized box, then shipped. When it arrived, the leaf springs were sticking out the sides and there were holes big enough for the smaller boxes to fall out. Fortunately, everything was there. This is the second time I have ordered product is was packed very poorly!



- K71-449-00
by:

etrailer- I cant say thank you enough Finally, someone sells a product that is done right. Within 9 months of purchasing a brand new twin 5200 lb tandem axle trailer, i lost an axle due to light flimsy spring shackles that wore through ( no way to grease them either) .I have been towing tandem trailers for the past 30 years, always having undercarriage issues (hangers and equalizers by other companies wearing through one being cheaper and thinner than the next. These are truly Heavy Duty... I can now travel down the road feeling confident that my leaf springs and axles are strong, sturdy and over engineered. etrailer was the only one i found that sold truly Heavy Duty Hardware that is truly over engineered and realistically, under priced... Thanks again etrailer



- K71-449-00
by:

Havent installed yet but this is really beefy, and I love the fact that I can grease all the joints now. These brackets are more than double the thickness of OEM.


Comments
A year later and these have been on for 10 months or so. Due to a defect in my trailer mounts, I wasnt able to use the included bushings, but it still is quiter, and beefier than OEM, at about half the price of the local autoparts store.
BradleyC W - 06/22/2018



- K71-449-00
by:

These were an exact fit and worked perfectly. Good quality along with grease zerks on every point are a big plus. I recommend this kit to friends.



- K71-449-00
by:

These parts are GREAT. The links are super heavy and the ability to grease them is wonderful. The bronze bushings are very superior to the plastic ones. A few folks complained about having to remove the tires to access the grease fittings. I just installed mine to the inside so all I have to do is crawl under the trailer (or get a kid to do it) and it only takes a few minutes.


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Show More Reviews

Ask the Experts about this Dexter Axle Trailer Leaf Spring Suspension



  • Dexter Suspension Kit For Tandem Trailers With Equalizers Measuring 7-3/4, 6, or 5-3/4
    The Dexter suspension kits are high quality and include "wet bolts", bronze bushings instead of nylon and thick shackles. Properly maintained these would likely outlast typical factory kits three times over! To determine which kit is right for you simply measure the distance across the equalizer and use part # K71-449-00 for 7-3/4" long, part # K71-448-00 for 6" long, or part # K71-359-00 for 5-3/4" long. I have included a picture of the 7-3/4" equalizer showing where to measure. If...
    view full answer...
    Image 1 for
  • How To Choose the Correct Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers
    I don't have any information as to what leaf springs are on any one particular trailer such as a 2007 Jayco Jay Flight 29BHS but if they are double eye leaf springs which are the most common then we should have a Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers that will work. In order to choose the correct one you just need to make note of the equalizer dimensions; part # K71-449-00 for 7-3/4" long, part # K71-448-00 for 6" long, or part # K71-359-00 for 5-3/4" long.
    view full answer...
  • Correct Dexter Heavy-Duty Suspension Kit for a 2010 Keystone Cougar 5th Wheel
    The correct Dexter Heavy-Duty Suspension Kit for a 2010 Keystone Cougar 5th Wheel is part # K71-449-00. That said, if you are looking for a true upgrade I recommend going with the Dexter E-Z Flex Suspension Kit part # K71-653-00 since the cushioned equalizers will do a far better job of helping to reduce road shock. These options are both designed for the 35" axle spread.
    view full answer...
  • Recommended Replacement Equalizers, Bolts, Bushings And Shackle Straps For Tandem Axle Horse Trailer
    We currently will not have a kit that contains everything that you are looking for but we do have all the parts you will need. First I recommend upgrading your equalizers to the MORryde Rubber Equalizers for Tandem Axle Trailers # MR87ZR. These cushioned equalizers will help to extend the life of your suspension components by absorbing the harsh road shock and reducing back and forth chucking. This will equal a better ride for your horses as well. Pair this with the MORryde Suspension...
    view full answer...
    Image 1 for
  • Does the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers Come with Bolts for the Hangers
    The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers part # K71-449-00 does not come with eye bolts for the leaf spring side which is attached to the hanger. That said, all you would need to do to obtain these is simply purchase four additional bolts, if you prefer wet then you can use part # 126B2.
    view full answer...
  • Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers
    There is a heavier duty version of the etrailer Suspension Kit for Tandem-Axle Trailers item # e99ZR and it has the wet bolts and bronze bushings you are looking for. It's the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers item # K71-449-00. This kit has wet bolts that secure equalizers and springs to the hangers on your trailer, grease zerks that allow for fast, easy lubrication to keep moving parts functioning at their best, and heavy-duty shackle link assemblies with bolts...
    view full answer...
  • Heavy Duty Dexter Suspension Kit For 2011 Dutchman Denali Trailer
    The equalizer and shackle straps in the picture look a little worn, so replacing is a good idea on your 2011 Dutchman Denali. The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs # K71-449-00 is a great upgrade option for you that gives you the grease zerk(s) for easy maintenance. As long as you current equalizer is 7-3/4 inches on center from bolt to bolt, it is a great replacement for your application. If you have a different measurement of...
    view full answer...
    Image 1 for
  • Should Trailer Suspension Bolts be Torqued Down
    Since suspension components use lock nuts on the ends of the shackle bolts and the bolts need to be able to allow movement you actually don't want to torque down the bolts at all. You want to snug them up so that there's no lateral play but still allows easy movement of the bolts/shackles so that you don't inhibit the suspension from being able to do what it needs to do.
    view full answer...
    Image 1 for
  • Which Equalizer Upgrade Kit For 33 Inch Axle Spread Tandem Axle Trailer
    The Dexter equalizer's that you have on your trailer are 5 3/4 inches long. An upgrade equalizer kit that would work for your setup is the Equa-Flex Cushioned Equalizers - Double Eye Springs # LC279687. Since you mentioned that you are currently using 3 1/8 inch shackle's you will need the Lippert Components Tandem Axle Equa-Flex AP Kit - Wet Bolts - 3-1/8" Long Shackles # LC64FR which includes everything you need to complete the install. I included a video of the Equa-Flex Cushioned Equalizers...
    view full answer...
  • Do Trailer Shackle Bolts Require Splines to Prevent Wear from Occurring
    In general shackle bolts turning from use over time does not considerably wear out components. As long as the bolts are greased normally the movement from standard use would not cause them to wear out. The tension of the bolt and nut is loose enough to allow the movement to happen without much friction which also allows the material to not wear out quickly either.
    view full answer...
  • 1996 Fleetwood Wilderness Travel Trailer Components Needed for Suspension Replacement
    I have a solution for you, but the main issue at hand is going to be that none of the suspension kits that are available are going to work with axles spaced 28"- which it seems like you may already be aware of and prepared for. I think the best bet is going to be to cut off the hangers and relocate and axles to give you a different spacing; this is going to allow you to use the Heavy Duty components on this overhaul. Since you will need to cut off your existing hangers and move them and...
    view full answer...
  • Will Installing Leaf Springs with More Leaves Require New Equalizers and Will They Help Lift Trailer
    If your existing leaf springs originally measured 25-3/4 inches, it is highly likely that you can put 26 inch long leaf springs, like # SP-256275, on your trailer without needing to change the equalizers or move your spring hangers. If the existing springs originally measured 25-1/4 inches, moving up to 26 inch long springs will likely require some adjustments for your trailer. Using leaf springs that are longer and have more leaves will not help lift your trailer. Two ways to help...
    view full answer...
  • Recommended Brake Assemblies and Drums for Dexter P-11 model SLR SND 490400 Axle
    I reached out to my contact at Dexter and based on the information you gave, they said is it a spring axle with a 3500 lb capacity. Based on that, I recommend the Dexter Nev-R-Adjust Electric Trailer Brake Kit - 10" - Left and Right Hand Assemblies - 3.5K # 23-468-469 which comes with the backing plate and the 4 bolt mounting pattern. For your drum assemblies, I recommend the Dexter Trailer Hub and Drum Assembly for 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3-EZ if...
    view full answer...
  • Availability of Video Showing Draw-Tite Class III # 75614 Being Installed on 2010 Acura MDX
    We do indeed. Simply click on the provided link, and you can see the installation video. If you'll be using the hitch for towing, you might also need the following to complete your towing system: Trailer wiring harness with 4 pole trailer connector, part # 118424 Ball mount, part # 2923 1-7/8 inch trailer ball, part # 19260 2 inch trailer ball, part # 63845 Locking hitch pin, part # e98882 I've also linked you to an install video showing the trailer wiring harness being installed on...
    view full answer...
  • Bolt Position For The Dexter Suspension Kit For Tandem-Axles # K71-449-00
    When using the Dexter Heavy-Duty Suspension Kit # K71-449-00 I recommend taking your bolt with grease and feed it from the tire side to the inside of your trailer. This will prevent your tires from getting scratched on the more abrasive side and spread the grease evenly throughout the hole on the suspension kit.
    view full answer...
  • Difference Between Dexter Axle Heavy Duty Suspension Kits # K71-449-00 and # K71-359-00
    The difference is the length of the equalizers that come with the kit. The part # K71-449-00 comes with equalizers that are 7-3/4 inches from eye to eye whereas the part # K71-359-00 has equalizers that are 2 inches shorter at 5-3/4 inches.
    view full answer...
  • Compatibility of Dexter Heavy-Duty Suspension Kit with 2004 Forest River Wildcat 5th Wheel
    Thanks for the photo. You will not have any issue using the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs # K71-449-00 and moving the equalizer bolt down to the lower hole position. This will work very well on your trailer and will give you a better equalizer with the integrated grease zerk and the heavy-duty shackles with integrated grease zerks. The minor difference in equalizer height at that point will not be an issue for the shackle straps.
    view full answer...
    Image 1 for
  • Do the Bolts of the Dexter Heavy-Duty Tandem-Axle Trailer Suspension Kit Have Splines
    The wet bolts that come with the Dexter Heavy-Duty Tandem-Axle Trailer Suspension Kit # K71-449-00 are not splined. They are totally smooth. I attached a picture of what they look like. Splines are typically used for studs to help prevent it from rotating. There would be no need for that for a trailer shackle bolt.
    view full answer...
    Image 1 for
  • Dexter Heavy Duty Greasable Shackle Kit Needed
    It sounds like the Replacement Shackle Link with Bolts # 018-026-05 that you referenced is what you are needing. It comes with the shackle and wet bolts that have a grease zerk fitting installed on them. This kit is compatible with the following heavy duty Dexter Axle suspension kits: Kit - # K71-359-00 Kit - # K71-360-00 Kit - K71-448-00 Kit - # K71-449-00 Kit - K71-453-00
    view full answer...
    Image 1 for
  • Over-Under Kit for 3,500 Pound Trailer Axle To Provide Additional Clearance
    The over-under kit you will likely want to use is the Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00. This over-under kit fits 2-3/8 inch round axles on trailers with double-eye springs. If your axle is a 3 inch round axle, and your trailer used double-eye springs, you will want to use kit # K71-385-00. I have attached a picture showing what the axle set-up will look like with the over-under kit installed. The spring seat will need to be tack welded to the axle once in...
    view full answer...
    Image 1 for
  • Wet Bolt Replacement for Dexter Heavy Duty Suspension kit # K71-360-00
    The bolt that you are needing is the # 34007-187-00 for the equalizer kit part # K71-449-00 that you referenced.
    view full answer...
  • Can Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers # K71-449-00 Replace Longer Shackles
    You would be fine to use the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers # K71-449-00 that you referenced which has shackle straps that are 1-1/4 inch shorter than what you have now. The ride height of the trailer would lower slightly but the suspension would still work great overall without any issue.
    view full answer...
  • Can 3-1/8 Inch Heavy Duty Shackle Straps be Used in Dexter Heavy-Duty Trailer Suspension Kit
    All of the tandem axle hanger kits for double-eye springs use 2-5/8 inch or 2-1/4 inch long shackle straps. The length is taken from the center of one eye to the center of the other eye. The overall length of a 2-5/8 model is just under 3-1/2 inches. The overall length of a 2-1/4 model is 3-3/8 inches.
    view full answer...
  • How Tight Should Shackle Straps and Bolts Be Tightened On Trailer
    There is no specific torque rating for shackle bolts. Basically for the middle bolt there should be enough free play in the shackles to allow them to move. Tightening the shackle bolts too much will squeeze the shackle straps against the leaf springs and the whole suspension system will bind and cause problems. The best thing to do when tightening down shackle bolts is to use lock nuts and tighten them until they are snug and then backed off 1/4 turn. Lock nuts should be used because they...
    view full answer...


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