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Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 3-1/4" Center
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Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 3-1/4" Center

Part Number: APT7
$127.50
Trailer Suspension Parts
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Leaf-spring mounting kit includes 2-1/2" tall front hangers, 3-1/4" tall center hangers, 2-1/2" tall rear hangers and necessary hardware. Equalizers are 7-3/4" long. Components for mounting axle to springs sold separately. Great Prices for the best trailer suspension parts from etrailer. Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 3-1/4" Center part number APT7 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Suspension Parts - APT7

Highlights

  • Supports 2,000-lb to 7,000-lb axles: Handles medium to heavy tandem trailer loads safely.
  • 2-1/2" front/rear & 3-1/4" center hangers: Sets correct ride height and keeps suspension level.
  • 7-3/4" curved equalizers: Balance axle movement for a smoother, more stable tow.
  • 2-5/8" shackle straps with 9/16" bolts: Allow proper flex and free suspension travel.
  • Includes all hangers, equalizers & hardware: Provides what’s needed to mount four leaf springs.
  • For double-eye leaf springs: Works with common trailer suspension setups for reliability.
Made in USA

Features to know about

Smooth, Balanced Suspension Travel: 7-3/4" Equalizers Keep Axles in Sync

Uneven movement between axles can make a trailer ride harsh and unstable. The tandem-axle hanger kit includes 7-3/4" long curved equalizers that let the axles move together smoothly so bumps and dips are absorbed evenly. This keeps your trailer tracking straight, reduces bounce, and helps the suspension move freely without binding.

Right Height for Level Suspension: 2-1/2" and 3-1/4" Tall Hangers

Getting the correct hanger height is key to keeping the frame level and the axles aligned. This kit comes with (4) 2-1/2" tall front and rear hangers and (2) 3-1/4" tall center hangers. The taller center hanger helps balance the suspension geometry so both axles share the load evenly.

Flexible, Free-Moving Setup: Proper Play in Shackles and Bolts

A suspension that’s too tight can’t flex the way it needs to. The included (8) 2-5/8" long shackle straps and (14) 3" long x 9/16" diameter shackle bolts with locknuts are designed for smooth movement. When installed snug—but not over-tightened—they allow the suspension to articulate freely, which prevents stress on the components and keeps travel comfortable.

Built for Tandem Strength: Handles 2,000-lb to 7,000-lb Axles

Whether your trailer hauls light gear or heavy loads, this hanger kit is designed for the job. It’s made for tandem setups with 2,000-lb to 7,000-lb axles and attaches four double-eye leaf springs to the frame. The combination of durable hangers, equalizers, shackles, and hardware gives your suspension a solid connection that stays strong mile after mile.

Complete Mounting Points in One Kit: All Hardware Included

Everything needed to hang the springs is here—front, center, and rear hangers, equalizers, shackle straps, bolts, and locknuts. Components for mounting the axle to the springs are sold separately, letting you choose the right hardware for your specific setup while keeping all the hanger parts matched and ready to go.

Specs

Hanger Dimensions

  • Front hangers: 2-1/2" tall
  • Center hangers: 3-1/4" tall
  • Rear hangers: 2-1/2" tall

Equalizer and Shackle Dimensions

  • Equalizers: 7-3/4" long
  • Shackle straps: 2-5/8" long

Hardware

  • Shackle bolts: 3" long x 9/16" diameter
  • Locknuts: 9/16" diameter

Compatibility

  • Trailer type: Tandem axle
  • Axle capacity: 2,000-lb to 7,000-lb

TSW-14 Tandem Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs

Replaces APT7





Video of Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 3-1/4" Center
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for A Closer Look at the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs

Today we're going to be taking a look at the tandem-axle trailer hanger kit for double-eye springs. This leaf spring mounting kit includes your equalizers, your front, center and rear hangers as well as necessary hardware for the installation. Now, components for mounting the axle to the springs are sold separately. This kit is designed for use on trailers with tandem 2,000-pound to 7,000-pound axles. This kit would be great for building a new trailer, rebuilding an old trailer, repairing or upgrading your trailer's suspension system. The hangers and the shackle straps are made from a durable steel construction. The hangers are designed to be a weld-on installation.

Located at the top of each hanger you're going to notice two holes. These are for spot welds. This kit attached four leaf springs to your trailer frame. We're just going to go over the components that are included with the kit. You're going to get four 2-1/2-inch tall hangers, two for the front and two for the rear.

Two of them act as front hangers, the other two act as rear hangers. The 2-1/2-inch tall measurement is measured from the center of the 9/16-inch diameter hole to the top of the hanger. Then you're also going to get two 3-1/4-inch tall center hangers, 3-1/4-inch measurements taken from the center of the 9/16-inch diameter hole to the top of the hanger. The kit also comes with your equalizers. These are going to be two 7-3/4-inch long curved equalizers with 9/16-inch diameter center and end holes. The 7-3/4-inch measurement comes from measuring from the center of one outer hole to the center of the other outer hole, so center-on-center 7-3/4 inches.

You're going to get your shackle straps. You're going to get eight of these and they measure 2-5/8 of an inch long. That's measured from the center of one hole to the center of the other hole. Then you're also going to get the bolts and locknuts. You're going to get fourteen 3-inch long by 9/16-inch diameter shackle bolts and fourteen 9/16-inch diameter locknuts. The center hangers are going to suspend the equalizers from the trailer frame and at each end of the equalizers connects to one end of the leaf springs with the included hardware and shackle straps.

Then the other ends of the leaf springs connect directly to the front and rear hangers with the included hardware. That's going to do it for today's look at the tandem axle trailer hanger kit for double-eye springs.

Ratings & Reviews

4.7

713 reviews
Review sort icon
Leaf-spring mounting kit includes 2-1/2" tall front hangers, 3-1/4" tall center hangers, 2-1/2" tall rear hangers and necessary hardware. Equalizers are 7-3/4" long. Components for mounting axle to springs sold separately.

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Worked for a tandem 3500lb HD axle



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We summer at a remote cabin in the Gila Nat'l Forest above Silver City NM. The last 5 miles to the cabin is extremely rough and puts a lot of wear and tear on both my truck and my trailer that we use to transport water, food, building materials and supplies to the cabin on a twice a month schedule. I have had suspension springs break, blown tires and damaged coupler. I ordered this kit to replace the entire hanger assembly because of wear and tear, cracks and loose fittings. I had to re-enforce the frame and weld up some cracks and wear points. The kit was great and worked perfect. The trailer is now like new and will serve me for years to come.



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Worked perfect. Old ones were worn out, these were the perfect replacement.



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Damaged packaging with a result of missing 6 hex nuts to install this kit. Now I’ll have to go to hardware store and get new ones. Irritating



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I purchased parts for my 14'x7'enclosed trailer as spares just in case I have a problem while on the road. I am planning a 12500-mile trip this summer and want to be prepared for any potential breakdown. The kit has all the parts necessary to attach two axles and 4 springs to a trailer. The parts are high quality and match the factory Dexter axle parts on my trailer exactly.



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I ordered a tandom axle trailer suspension kit. I also ordered the bolt kit to go with it. I specifically asked the salesman if everything thing I needed to mount the axles was included, and he assured me that it was all there
When I opened the box and got ready to install the kit I found I only got one set of U bolts. It's like you don't have a clue about what you are selling! Very disappointed!



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Good quality parts, new hanger bracket was 1/4” steel. Just had to get shackle straps separate, as this trailer had an odd length on it.



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We purchased these parts for a custom build trailer for hauling heavy tool boxes over steep grades. Since completion of the build about a year ago, we have been using it and put a lot of miles on it. The hydraulic surge brake system makes it worry free. We can tow it behind different vehicles of differing weights and wheel bases and not worry about setting trailer braking, it is very nice. We will continue to use etrailer for our trailer needs.



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I decided to reuse the existing brackets to save some welding, but all of the bolts and the equalizer went on without an issue and seemed to be of Excellent quality. I expect to be able to keep my 50 year old trailer for another 50 years.



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As expexted



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Exactly what I ordered and needed



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You have great serves and good prices



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Everything that i expected with a great price and easier than going to several different local places to put together what i got from one place.



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Worked great. Good price.



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Good value for the money. One of the
two springs had an eye so egg shaped that I could not get the bolt through, not happy about that. Ruined one sleeve and took 30 min + to fix. I had to buy a set of 4 sleeves to replace1 sleeve which meant atrip into town. Other than that I am happy with the product and the quick delivery and e trailers service.



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Received in exactly the time they said. One part (the y-shaped pieces) were the wrong size, but I have the correct size from a previous order, so it all worked out in the end.

It would be nice if you can order a kit with just the pieces you need (I don't need the hangers but need all of the other pieces.) Then, I have to order the bushings separately.



by:

The equalizers work great. Came with everything I needed for a good price and very fast shipping.



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replacement parts were an exact match and easy to install. follow up from etrailer was extra nice. I will be ordering from etrailer again.



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Shipping Was Very Fast, Product Shipped was packaged Very Well, I Received Everything I Ordered. Prices Were Excellent Compared To Other Providers.
But The Best Thing of All Was Your Web Page, Prices are Right up Front and You
Have A Video For Almost All Your Products Which was very helpful to Me. I Would
buy again as a matter of fact I did Just Place My Second Order. Thanks Again
Everett King



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I Installed new suspension over a year ago and it has handled a lot of weight since. Still holds strong. Be sure to keep parts greased! And they will take you far.



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I only needed the equalizers,shackles and bolts as mine were worn out. I already had new bushings left over from another project...... it was a great deal and a great fit. No problems, Fast Shipping and YES I will be using etrailer.com again!



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i liked the time it took to get, i liked the ease at which it was to order, liked no shipping fees, i did not like that the spring plates were not for 1 3/4 or 2 in springs, the ones received were for 2 in to 2 1/8 in. i used the plates i had that allowed the u bolts ride much closer to springs. maybe thats the way they are made now. but if thats the case i would not buy them again. Also liked the prices but i thought i saw that the spring bushings came with the kit. It is very possible i was mistaken about that. All in all i would order from etrailer again.


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See what our Experts say about this etrailer Trailer Suspension Parts

  • How to Determine Hanger Spacing for Tandem Axle Trailer Suspension with 26 Inch Springs
    Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are based on our preassembled kits, so we will use that as a foundation for your setup. First, I would either replace all of the front and rear hangers with 2-1/2 inch tall hangers like part # 115918 or replace just the center hangers with 2-1/2...
    view full answer...
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  • How Tight Should Shackle Bolts Be Tightened On Trailer
    There should be enough free play in the shackles to allow them to move. There is no specific torque rating for shackle bolts. The first thing you should make sure of is that the bolts you use are long enough so that when installed you will have at least 2 threads protruding from the nut. Next, make sure that the nut you are using is a locking nut, so that it cannot work loose and fall off. If the bolt you are using has knurls at the bolt head you will want to tighten the bolt down until...
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  • Is It Normal For Frame Hangers to Have Different Heights/Mounting Holes
    Hey Peter, It's totally normal for hangers to have either different heights or mounting hole positions; for example, the center hanger of the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs # APT7 is longer than the other two hangers. This is to ensure the suspension is as level as possible, as the straps make up the difference.
    view full answer...
  • Will Trailer Hanger Kit APT7 Have Enough Clearance for 6K Axle
    Hey J, thanks for reaching out! The Tandem-Axle Trailer Hanger Kit # APT7 would be cutting it a little close depending on what leaf spring you're using, so I recommend going with the Tandem-Axle Trailer Hanger Kit # APT5 instead. It uses the same equalizer, but it comes with taller hangers, so you get a little more clearance. Do you already have some leaf springs in mind you'll be using, or are you in the market for those as well?
    view full answer...
  • Is It Normal For One Shackle To Point Up and The Other Point Down After Replacing Equalizers?
    The shackles on your equalizers should be pointing up when the trailer is under its weight on the ground, and will only point down like you mentioned when the trailer is in the air and the axles are off the ground. It is pretty common for one side of the equalizer to pop up before the other side and to get the other side to pop up you will want to pull the trailer over a bump. We have found a speed bump works the best if you have one near you.
    view full answer...
  • How Tight Should Leaf Spring Shackle and Spring Eye Bolts Be
    If the bolts for the shackle link and the leaf spring eye are too tight, the suspension won't articulate as it should. You want to run the bolt down tight, then back it off by a 1/4 turn, as you'd mentioned.
    view full answer...
  • How to Decide Which Tandem Axle Trailer Hanger Kit to Use
    Typically when building a tandem axle trailer I recommend using either the # APT3 or # APT5 Tandem-Axle Trailer Hanger Kit. These are the most common kits used for utility trailers and parts are readily available. The # APT5 kit is by far the most common because all the hangers are the same height and provide good tire clearance. There are a lot of variables when selecting a hanger kit. First you should select a kit that will accommodate the wheel and tire combination you are using. The...
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  • Does Trailer Suspension 7-3/4 Inch Equalizer EQ-E1 Have a Weight Capacity
    Equalizer # TREQE1 does not have a weight capacity itself. It isn't bearing much of the weight compared to other components in a trailer suspension set up. If you have a tandem axle trailer then you could potentially use kit # APT5, # APT3, # APT9, # APT8, # APT7, or # APT3HD. All of these kits have the 7-3/4 inch long equalizers. For a triple axle trailer you could use # APTT5 or # APTT3. All of the above kits also come with hangers. If you do not need hangers then you would need to...
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  • How Tight Should Shackle Bolts Be On Tandem-Axle Trailer Hanger Kit # APT7
    When installing The Tandem-Axle Trailer Hanger Kit # APT7 there should just enough free play in the shackles to allow them move. You will want to tighten the bolt down until the knurls go through the shackle link or spring/equalizer hanger and the bolt head is flush. The nuts should be snug and not tight. I attached a review video link below.
    view full answer...
  • Correct Equalizer Positioning For A Tandem Axle Boat Trailer
    That does look slightly out of the ordinary. The equalizer should not be off to one side like that. Generally the equalizer will be more centered, and the shackles will form a "W" shape. I have included a picture with an example of how the equalizer and shackles should be positioned. Assuming this is all stock suspension, it looks like your leaf springs are too long. Perhaps they have flattened out over time, or they are overloaded. If so your springs will need to be replaced. We would...
    view full answer...
    Image 1 for Image 2 for
  • Will Putting Axle In Backwards Cause Trailer Brakes To Not Function?
    The reason your brakes are no longer functioning, is that they are actually directional with the front and rear pads being different. Since the axle is backwards meaning the brakes are backwards the brakes will not function. To fix this you will need to remove the axle and turn it around. As long as the shackle bolts are not rusted, you will have no issues reusing them. If they have any damage though I would go ahead and replace them for peace of mind. If you need a replacement we have...
    view full answer...
  • Using Taller Leaf Spring Hangers on 18 ft Utility Trailer
    You can certainly use the taller hangers if you wish, but keep in mind that using the taller hanger (assuming you are installing the hangers in the same location as the old ones) could increase the deck height of your trailer by a small amount.
    view full answer...
  • Are Two Wrenches Needed When Tightening Shackle Bolts on Trailer Suspension.
    Shackle bolts have a nut that needs to get held with a wrench or socket while tightening them down. If you didn't use a wrench or socket when you initially installed the shackle bolts you could go back now with one so that you can tighten them properly. If you are concerned about the condition of the knurls or the threads of the bolt you could remove the bolt and inspect it. Most likely they would be fine though.
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  • Recommended Spring Hanger Kit for Load Rite Boat Trailer 3X5 Box Frame, 7200 lbs Gross Suspension
    There are a lot of variables to consider when selecting a hanger kit. First you should select a kit that will accommodate the wheel and tire combination you are using. The # APT3 kit is a good choice for smaller wheel and tire combinations like 14 inch wheel and tire combinations and the # APT5 kit would be a good choice for 15 or 16 inch wheel and tire combinations since it provides a bit more clearance for tire height. The # APT7, # APT8 and # APT9 hanger kits are typically used as replacement...
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  • Not Enough Wheel To Fender Clearance And Suspension Is Loose
    Shackle straps and equalizers are intended to have a little play in them when installed correctly to allow the suspension to have free movement but your equalizer bolt should not really be turning in place. We do recommend no less than 4-1/2" inches of clearance from the top of your tire to the fender of your trailer to accommodate for suspension travel. If you are smelling burning rubber most likely the tire is rubbing and because you do not have enough clearance. The tires may be too...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Cole B
Installed by:
Cole B

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