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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

Part Number: K71-448-00
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Suspension kit includes equalizers and hardware for attaching leaf springs to the hangers on your tandem-axle trailer's frame. Includes (2) 4" tall equalizers with built-in grease zerks for easy lubrication and heavy-duty shackle straps. Great Prices for the best trailer suspension parts from Dexter. Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs part number K71-448-00 can be ordered online at or call 1-800-940-8924 for expert service.
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Dexter Trailer Suspension Parts - K71-448-00

  • Suspension Kits
  • Boat Trailer
  • Snowmobile Trailer
  • Double Eye Springs
  • Tandem Axle
  • Dexter

Suspension kit includes equalizers and hardware for attaching leaf springs to the hangers on your tandem-axle trailer's frame. Includes (2) 4" tall equalizers with built-in grease zerks for easy lubrication and heavy-duty shackle straps.


  • Suspension kit lets you attach 4 leaf springs (sold separately) to your trailer frame
    • Works with tandem-axle trailers with 1-3/4" double-eye springs
    • Hangers sold separately
  • Equalizers transfer load and impact from one axle to another by permitting movement between the axles
    • Springs attach to ends of equalizers with included hardware
  • 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 with built-in grease fittings
    • 4 Shackle strap assemblies - shackle straps with wet bolts
    • 8 Bronze bushings
    • 2 Dry suspension bolts
    • 4 Wet suspension bolts
    • 14 Flange nuts


  • Application: tandem-axle trailers with 1-3/4" double-eye springs
  • Equalizer dimensions:
    • Distance between outer shackle bolt holes (center on center): 6"
    • Distance between hanger bolt hole and shackle bolt hole (center on center): 3"
    • Height of side bolt hole to hanger bolt hole: 4"
  • Shackle strap length: 2-1/4" from center hole to center hole
  • 5-Year limited warranty

Dimensional Diagam

K71-448-00 Dexter Axle Heavy Duty Suspension Kit for Tandem Axle Trailers - 1-3/4" Wide Double-Eye Springs - 4" Tall Equalizers

Customer Satisfaction Score:

Customer Reviews

Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs - K71-448-00

Average Customer Rating:  4.6 out of 5 stars   (82 Customer Reviews)

Suspension kit includes equalizers and hardware for attaching leaf springs to the hangers on your tandem-axle trailer's frame. Includes (2) 4" tall equalizers with built-in grease zerks for easy lubrication and heavy-duty shackle straps.


Received the package damaged with missing parts from USPS. etrailer told me they were going "make it right" and expedite the new package. I just spoke with a manager who told me there was an error in the system that flipped it from expedited to USPS shipping.


Great kit put together by Dexter! I did find that the eye bolts furthest away from the equalizer were better put in with grease zerk on the inside because the factory bolts had neck ribbing and they are much easier to drive in. The other bolt can all be put in either way .


Absolutely a perfect fit. I was in a rush to make a trip to Western Colorado and Moab Utah when I noticed all my bushings were shot and had worn into the equalizers. I called Michelle and she had my parts on the way immediately. I also ended getting 4 new tires and wheels. Couldn't be more pleased with Michelle B and I highly recommend them. They have all the parts you need and the service is 2nd to none.


Excellent service, Excellent product, much heavier duty than original



Great, No issues


Replaced the old trailer suspension with the heavy-duty suspension kit, U-bolts, and leaf springs from etrailer. Everything fit like it should, and looks like it will last longer than I will.


Great product, had these on before a leaf spring busted on me and figured just replace all 6 springs and the hangers. Easy to grease and maintain, fit just like the originals that did not have grease-able bolts. Didn't want to reuse the bolts and nuts from the previous grease-able set I had on it, cheap insurance and peace of mind. Painted the hangers and the leaf springs to match my trailer.


Overall I’m very pleased with this heavy duty suspension kit. It fit correctly and I’m sure this wet-bolt system will be much more durable than my old dry-bolt system, which at 4 years old was showing major wear, rust, and fatigue. The reason I gave it only 4 stars was because one of the nuts stripped out under very little torque, as if it hadn’t been heat treated and hardened. The bolt was fine. I reinstalled one of my old nuts and it torqued fine to 50 ft. lbs., per Dexter specifications. All other parts were fine.


Very happy with the product and installation instructions. I anticipate better performance of the suspension with the greaseable brass bushings.


Dexter suspension kit was excellent. Added 14 more grease points which should help with wear. Very satisfied.
Bronze bushings replaced oem plastic in springs.


The hangers are thicker and more robust. The brackets fit tight so be patient. They should last the life of the trailer. Etrailer got them to me quick and they fit perfect.


Perfect product. Easy to install as long as you make sure that the trailer is well supported before banging old shackle bolts out and new ones in. Do not try to hammer the new sleeves into the spring eyes. Use a large C clamp. One of the pre-assembled shackle bolt units was slightly bent, not noticably so, but had to use some heat to install the matching plate.



It is such a great feeling that the springs are now riding on unborn shackles. The old ones were so worn that I am surprised that the springs were still connected to the chassis. Peace of mind is a great feeling.


Very easy to install once you get the old junk off. Major improvement. Great sales personnel. Very helpful quick and easy purchase.


Two Stars for etrailer and 5 stars for Dexter's product.
Order was placed via phone and etrailer got the street address wrong but had the correct name, city and phone number on the shipping label. So I got notified by the receiving person and I went to pick it up.

The box had a lot of tape on it and it was the Dexter factory box which etrailer did not re-box or anything so once I cut though all that tape most likely put on by UPS when they discovered the box was damaged I started checking inventory and sure enough missing 3 shackle plates! I promptly called etrailer with the address mess up and loss parts due to the package not being properly prepped to go though the shipping channels. As I was leaving in a couple of day I asked it they could expedite the missing parts to me and was told no it would take a week. Well I got notice that the package was delivered to my front door but when I went out there was no package from them via ups. Ups did leave my orders from [online] and [online] but nothing from etrailer. So I emailed etrailer requesting the tracking number as they do not provide them with the shipping notice so I could see where it was delivered to thinking they got the address wrong again. Got a response email stating it was delivered! So I called and the guy said it shows UPS left it at my front door and he read off the address which was correct. Then he said while it says that it also says left at local post office! So not a great experience, I would like to see edtrailer allow you to create an acct so you can view current orders as well as past orders and provide an actual tracking number so you can get info straight from the shipping company.


No more squeaky trailer suspension! These are HEAVY duty and give me the utmost confidence trailering cross country! I highly recommend this upgrade!

Carl F.


Excellent! Routinely keep them greased and they are performing great!


Yesterday I completed the install of the Dexter Heavy Duty Suspension,
kit # K71-448-00. The included instructions were pretty good, plus I watched a few YouTube videos before beginning the install. The biggest issue was removing the old bolts from the trailer. Once that was accomplished the new parts went on easily. Now my suspension just looks stronger and with the wet bolts it should last the life of the trailer. The old plastic bushings were pretty well shot and were overdue for replacement. Thanks to etrialer for a great upgrade!


I finally got around to installing the Dexter suspension kit today ( having received it over a month ago ). Installation went very smoothly. The product looks MUCH better than the stock components that were on my Jayco trailer. I believe the capability to routinely lube the pins will make a big difference in performance and longevity. I've ordered many items from etrailer over the years and they did a great job at delivery with good pricing.


Will make a great improvement without spending a fortune.


Perfect, great up grade! Shipped really fast.


Much better quality than the original. We like the ability to grease it. Harder than I expected it would be. Had trouble lining up the springs with hangers and had to use a come along to pull the axle into place. Tough job for a 69 year old. This is what should come on ALL new campers


I've had a few sets of shackle straps wear out. While replacing them I noticed that the bolts and bushings were badly worn. The equalizer also had heavy wear in the center bolt hole. I decided to replace all of the lighter duty parts with this Dexter heavy duty suspension kit. These shackle straps are much heavier and all of the bushings are bronze. These are also wet bolts, so I'll be able to keep them greased and prevent wear. The parts came in a kit together and were easy to install. Shipping was fast and etrailer honored the lowest price pledge by refunding me 110% of the difference between their price and the advertised price of another seller. I definitely recommend this kit from Dexter and etrailer as the right place to get it.


The parts were all the right ones and most were Dexter oem parts. The only problem I had was putting the bolts in the frame end of the spring perch. It was easier to take the spring loose from the axle, put the bolt in ,then bolt it back to the axle. I intend to buy all of my future trailer parts from etrailer.


This suspension kit was perfect for my Forest River Wolfpack. If you have a 40' camper you need this. It raised the rear height giving more of a level pull, stiffer turns, better off-road less roll and less bounce in the camper when setup. All campers are junk quality, so do yourself a favor and upgrade your suspension.


Great product, great price! Included all the hardware to replace everything that wears in the spring suspension. Made a loose, very worn trailer like new. Also the bushings are greaseable now so should stay that way.


Robust replacement parts for an RV susp ension.


Went together really easy

Show More Reviews

See what our Experts say about this Dexter Trailer Suspension Parts

  • Replacement Landing Gear and Equalizers for a 2008 Keystone Cougar 5th Wheel
    Thanks for the pictures! Based on the weight of your 2008 Keystone Cougar 5th Wheel, you will want the item # LG-1 landing gear set. You are going to want to measure to be sure this is the right size for you. The two things you will want to measure will be the distance of the black outer tube of the jack and the distance between the frame clamps (this measurement can differ depending on where the weld stops are located). You'lll need to measure from the underside of top bracket to top of...
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  • Difference Between Dexter Heavy-Duty Suspension Kit K71-448-00 & K71-359-00
    Excellent question, and the difference between the two kits comes down to the dimensions of the equalizers. What you will want to do is match up the size of your equalizer with the size of the equalizer in these kits. - 6" Long, 4" Tall Equalizer: Dexter Heavy-Duty Suspension Kit # K71-448-00 - 5-3/4" Long, 2" Tall Equalizer: Dexter Heavy-Duty Suspension Kit # K71-359-00 Both kits are otherwise for use with tandem axle trailers that have 1-3/4" wide double-eye leaf springs. You won't...
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  • Dexter Triangular Equalizer Kit With Wet Bolts And No Grease Zerk On Top of Equalizer
    Randy, I have a couple routes you can go since the grease zerk on the Dexter Heavy-Duty Suspension Kit # K71-448-00 is not going to fit inside your hanger. We do have the Triangular Equalizer # TREQ310 but this comes with nylon inserts so you would need to swap them for Bronze # D014-077-00 if you wanted to have Wet Bolts # MR46ZR. Otherwise you could use the Kit # K71-448-00 and swap out the standard pivot bolts which come with the kit for the Wet Bolt # MR92HR and Nut # MR85DR. The...
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  • Recommended 14-1/2" x 3" Tall Equalizer and Replacement Shackle Kit
    To replace your 14-1/2" x 3" tall equalizer you will want the Curved Equalizer for 1-3/4" Wide Double-Eye Spring item # K13-142-02. This equalizer is slightly larger at 14-3/4" but will still work for your trailer. For upgraded shackles and wet bolts you will want the MORryde Suspension Upgrade Kit for Tandem Axle Trailers item # MR46ZR (2-1/4" shackles) or item # MR76ZR (3-1/8" shackles). These kits come with the bronze bushings, wet bolts and shackle straps.
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  • How Tall Above Equalizer is Zerk Fitting of Dexter Equalizer K71-448-00
    The 90 degree zerk fitting on top of the Dexter Equalizer part # K71-448-00 is right at 1/2 inch above the top of the equalizer.
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  • How to Find if Dexter Heavy-Duty Suspension Kit Will Fit on Trailer
    The equalizers that come with the Dexter Heavy-Duty Suspension Kit # K71-448-00 have bolt holes that measure 6" apart on center and then 4" tall on center as you can see in the attached photo. You'll want to measure your current equalizers to see if they have similar dimensions or not. If they do then this is the kit for you. If they don't then just let me know what your measurements are and I can help you choose the correct replacement suspension kit from the linked selection.
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  • Can 4" Tall Equalizer Be Used To Replace 3" Tall Equalizer?
    You are correct. The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs # K71-448-00 you were looking at is 4" tall meaning it slightly will lift your trailer. These equalizers are slightly shorter at 6" wide but since it is within 1/8" you wont have any issues. I included a diagram showing the dimensions of the # K71-448-00 and a video review for you to take a look at.
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  • 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 item # K71-449-00 for 7-3/4" long, item # K71-448-00 for 6" long, or item # K71-359-00 for 5-3/4" long. I have included a picture of the 7-3/4" equalizer showing where to measure. If...
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  • 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.
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  • Determining The Correct Replacement Leaf Springs For Tandem Axle Trailer W/ Square Axles
    I would be happy to help you find the correct replacement suspension components for your trailer, but you will need to take a few measurements first. Starting with the leaf springs, you will need to make sure that the tires on the side of the trailer you are working on is off the ground with the trailer supported by the frame as the leaf springs will stretch when the tires are on the ground and weight is applied. If your 26-1/2" measurement was with the tires off the ground the closest...
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  • Replacement Suspension Kit For A Dexter 13-10 Tandem Axle
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  • Will Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers Work With 6 Inch Equalizer
    Thank you for the photo that was super helpful, and based off that I can tell you that yes, the Dexter suspension kit you asked about will work for your equalizers, with the part number being the following: - Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs # K71-448-00 The # K71-448-00 uses equalizers that have bolt holes 6 inches apart on center just like in your photo, and also 4 inches tall (I have added a photo with the dimensions of the...
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  • Upgraded Heavy Duty Shackle Kit with Bronze Bushings for Tandem Axle Trailer
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  • How To Confirm Fit of Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers
    The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers part # K71-448-00 has equalizers which measure 6" long from the center of each hole (left to right). The shackle straps measure 2-1/4" long from center to center. These are pretty standard measurements and work with most trailers but you will still need to measure first to confirm as there is really no other way to verify fit.
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  • Can Dexter Equalizer Kit part # K71-448-00 be Used with Dexter 3,500 lb Axle
    The Dexter Equalizer kit part # K71-448-00 can definitely be used on a 3,500 lb Dexter axle. These aren't normally picked out based on axle capacity instead they are picked out by dimensions. You can compare the dimensions of this to what you have now and you'll know if this would be an easy swap. This is 4 inches tall from the top hole down to the center of the bottom holes and then between the lower holes it measures 6 inches. The shackle strap that's included is 2-1/4 inch which is a...
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  • Trailer Suspension Kit That Uses Triangular Equalizers
    Yes, we do have more of a kit that includes an equalizer with the same specs as the Triangular Equalizer for 1-3/4" Double-Eye Springs # TREQ310. This is the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers # K71-448-00 and it comes with the equalizers, bolts, and shackles needed to replace your current parts. Aside from this you'll need new springs and potentially hangers depending on the current shape of these parts. If you need to replace those parts as well let me know the...
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  • Why Does the Dexter Heavy-Duty Suspension Kit K71-448-00 Come with Silver Bolts and Not Black
    The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers part # K71-448-00 has zinc plated wet bolts which are just as strong as the black bolts you are used to seeing. The metal is the exact same but the coatings are different. The zinc coating is more durable as it resists rust and corrosion better which is why Dexter is now starting to transition from the black bolts to the silver zinc plated bolts. The Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers is a fairly new kit...
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  • Recommended Replacement Suspension for 6K Tandem Axles
    Thanks for the measurements. I recommend using the 6-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 26" Long # SP-053275. Then use the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double-Eye Springs # K71-448-00. This is a heavier duty assembly with wet bolts for easy lubrication and heavy-duty shackle straps.
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  • What is the Weight Rating on the Dexter Heavy-Duty Suspension Kit
    The weight capacity for the Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers part # K71-448-00 is really going to be determined by the spring and the tires on the trailer they don't have a specified weight rating. It is for use with 1 3/4" wide springs so let's take the 6-Leaf Double-Eye Spring for 7,000-lb Trailer Axles - 24-7/8" part # e64SR this spring is rated for 3500 lbs. and is used on 7000 lb axles. It is the heaviest we offer so this kit that will connect two of these...
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  • Should There be Gaps between Trailer Suspension Components After Hardware is Installed
    Trailer suspension needs to be able to move to function properly. If you were to tighten down the shackle bolts and nuts to point that all gaps were removed and the components were tight to each other you'd have suspension that doesn't move. So you can leave the gaps you have now and everything will function fine.
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  • Dexter Heavy-Duty Suspension Kit For a 2015 Nitro Z8 Boat Trailer
    You will need the Dexter Heavy-Duty Suspension Kit # K71-448-00 for your 2015 Nitro Z8 boat trailer. This kit has the same triangle shaped equalizer as your current trailer. Also included are new shackle straps, wet bolts and bronze bushings for your leaf springs. Be sure to use some Grease # L11390 which is highly water insoluble and rated for marine applications.
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Info for this part was:

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Employee Lindsey S
Updated by:
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