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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: K71-449-00
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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. 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 K71-449-00 can be ordered online at or call 1-800-940-8924 for expert service.
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Dexter Trailer Suspension Parts - K71-449-00

  • Suspension Kits
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Double Eye Springs
  • Tandem Axle
  • Dexter

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.


  • 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


  • Application: tandem-axle trailers with 1-3/4" double-eye springs
  • Axle spacing: 35"
  • Equalizer dimensions:
    • Distance between outer shackle bolt holes (center on center): 7-3/4"
    • Distance between hanger bolt hole and shackle bolt hole (center on center): 3-7/8"
    • Height of side bolt hole to hanger bolt hole: 3"
  • Shackle strap length: 2-1/4" from center hole to center hole
  • 5-Year limited warranty

Dimensional Diagram

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

Customer Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.6 out of 5 stars   (153 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.


I really wanted to give this kit a 5 star review, however it fell short in more than one way. The parts are very nice and heavy duty looking and went together purrty good. However, when I went to grease the shackles none took grease it just came out around the fitting, so I changed the end on my grease gun thinking it was just worn out, still same problem. I had to hold the fitting on the zirk as hard as I could and finally got them to take grease, one still hasn't taken grease and not sure what I'm going to do. I left all hardware loose to this point to make sure there was no un nessesary pressure on anything hoping it would take grease easy. It's like the heads of the zirks are a size to small. After greasing everything the best I could I tightened everything up, during this process I had 2 nuts that the threads pulled out of... Just as they got tight they started to loosen up, I was using a standard length 1\2 drive craftsman ratchet, and I'm not hulk. I ended up having a few nuts and washers that worked but still this shouldn't have happened. Makes me wonder about the rest of the metals strength. Looks heavy duty but I'm starting to wonder about longevity.


After receiving my shipment yesterday, I was concerned that parts may have been missing due to the shape of the shipping box and the lack of packing material.

During the installation of the shackles, the third shackle nuts/bolts stripped out when tightened by hand. The shackle had to be cut off since the nuts could not be properly tightened. I have emailed etrailer with this issue and hopefully we can resolve the issue quickly.

Etrailer Expert

Katrina D.


Yikes, that does not look good at all. Let's get you over to customer service and get this fixed.


the only problem was the packaging was not heavy enough to hold the parts, therefore the box was damaged in shipping. Some parts were missing. I called and they were replaced no problem. All parts fit perfectly. good people to work with.


Love these heavy duty shackles and greasable are way better.


Installed on Ranger boat trailer, better than new, I recommend this product.


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.

Eugene M.


Working great


The customer service was outstanding! The wrong kit was ordered but Terri in customer service was right on top of it! Will definitly do business with E-Trailer in the future !


First I would like to thank etrailer for thier fast response in sending another kit that got lost in the mail. The 2nd set came in 2 days. This will be my 3rd set of heavy duty spring kits I gave installed. If you want your tires and alignment to last, this is the kit you need. There isn't a trailer out there that doesn't need this kit. Thank you Etrailer


Very heavy duty, good quality. I would recommend this product.


Everything I have ordered from etrailer has been great quality. The Heavy duty Suspension kit that I ordered was a great investment. Much stronger than the original parts!


Nice product and it’s great that it can be greased


This kit matches exactly the one in the trailer (that was in bad shape). Thanks to etrailer for carrying this and having a good price. It will be installed in a couple of weeks a after I finish up with other tasks.


its sucks when you only get half the pa rts

Etrailer Expert

Brooke M.


Definitely, it does! It looks like your package should have been delivered two days ago. Please let us know if anything is still unaccounted for.


The kit was great. Very heavy duty and installation was straightforward and quite easy. The reason for the 4 star rating was the grease zeros. I had to remove all of them from the bolt heads and replace them with new ones because they were quite literally junk and would not take grease because the heads were to small. I have been a long time Dexter fan and I sincerely hope this is not a sign of things to come.


Fit my trailer perfect. Make sure you measure correctly when ordering as there are 2 different kits. Every thing was correct and I cant believe how fast it got here with free shipping. The shackles are twice the thickness of my original shackles. Again great service and great product


Well packaged, good online video instructions. Very sturdy and solid construction. Our travel trailer original equipment components were worn through the plastic bushings and had badly worn shackles after only 17000 logged miles.. Thanks for making this upgrade available. Installation went smoothly. Took about 4 hrs total including set up time.


10000 miles and no problems, replaced springs at same time, no bottoming under full load, quiet.


Although the product is a good one, the packaging was bad. The box was damaged and three of the parts were damaged. I was lucky to have easy outs and spare grease fittings to replace the grease fittings that were broken. Had all of the materials inside the box been stuffed with "peanuts" or bubble wraps, they wouldn't have been damaged least I think so.

Jenny N.


It is a shame that the suspension kit arrived this way. Packaging these parts can be a challenge and I know our shippers do their best. I will have our Customer Service team reach out to you.


Always the best of quality and very helpful people. I always look here first!!!!


They arrived before time. Greatly appr eciated.


Great service. The part was correct and received like promised


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.


Beautiful work with greaseable joints!


These heavy duty parts are beefier and much better than the standard. It will take a lot to wear these out.


Suspension was very easy to install and works great!! The grease fittings will make this last much longer than the original suspension. Love it.

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  • Availability of 7-3/4 inch Equalizer Kit with 3-1/8 inch Long Shackles
    The lengths of the shackles that come with the equalizer kit part # K71-449-00 that you referenced are 2-7/8 inches measured from hole center to hole center. If yours are currently 3-1/8 inches this change would slightly lower the height of the trailer but it would still work. To match the shackle lengths and also be the thicker style you'd need the kit # MR76ZR with the # K71-655-00 which is cushioned. Or for just a standard equalizer and shackle kit you'd want the # e99ZR.
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  • Which Direction Should Grease Fitting of Dexter Equalizer Face
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  • Could Dexter Heavy-Duty Suspension Kit # K71-449-00 be Used on Triple Axle Trailer
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  • Can 3-1/8 Inch Heavy Duty Shackle Straps be Used in Dexter Heavy-Duty Trailer Suspension Kit
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  • Replacement Dexter Heavy Duty Suspension Kit For 7-3/4" Wide Equalizer
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Notes: Item has been installed and is missing 3 of the shackles.

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