bing tracking image
  1. Trailer Suspension Parts
  2. etrailer
  3. Hangers
  4. Suspension Kits
  5. Boat Trailer
  6. Camper
  7. Car Hauler
  8. Snowmobile Trailer
  9. Utility Trailer
Triple-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center
etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
etrailer

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

Part Number: APTT3
In Stock
$131.30
Trailer Suspension Parts
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Leaf-spring mounting kit includes 1-1/2" tall front hangers, 2-1/2" tall center hangers, 1-1/2" 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. Triple-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center part number APTT3 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (92)
  • Q & A (0)
  • Photos

etrailer Trailer Suspension Parts - APTT3

Highlights

  • Supports 2,000-lb to 7,000-lb axles: Covers a wide range of triple-axle trailer builds.
  • 1-1/2" Front/Rear & 2-1/2" Center Hangers: Levels spring height for proper suspension geometry.
  • 7-3/4" Long Equalizers: Balance axle movement for smoother towing and less bounce.
  • 2-5/8" Shackle Straps: Provide correct spacing and articulation between springs and equalizers.
  • 9/16" Bolts & Locknuts Included: Securely fasten the suspension components for reliable travel.
  • 3-1/2" to 4-1/2" Frame-to-Axle Clearance: Helps keep the trailer level and prevents bottoming out.
Made in USA

Features to know about

Smooth and Level Suspension Setup: Correct Hanger Heights Keep Springs Even

When your trailer rides unevenly, the suspension takes a beating. This kit uses 1-1/2" tall front and rear hangers and 2-1/2" tall center hangers so the equalizers and shackles line up correctly with the double-eye leaf springs. That difference in height keeps all three axles level, giving your suspension the right geometry for smooth movement over bumps and turns.

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

Heavy loads need hardware that can handle the weight. This triple-axle hanger kit is designed for use on trailers with 2,000-lb to 7,000-lb axles. The 7-3/4" long curved equalizers and 2-5/8" shackle straps make sure each spring shares the load evenly from front to back, reducing stress points and keeping the trailer tracking straight.

Reliable Hardware Included: Everything You Need for a Solid Mount

Nothing’s worse than hunting for missing bolts halfway through a job. This kit comes complete with (4) 1-1/2" tall hangers, (4) 2-1/2" tall hangers, (4) 7-3/4" long equalizers, (16) 2-5/8" long shackle straps, (24) 3" long x 9/16" diameter shackle bolts, and (24) 9/16" diameter locknuts. That’s everything needed to connect six double-eye leaf springs to your frame and have it ready for axle hardware.

Dialed-In Axle Spacing: Clear, Proven Measurements for Smooth Ride

Getting the spacing right keeps your tires and springs working together instead of fighting each other. With 2-3/8" axles, the setup gives you 29-1/2" between front and first-center hangers, 34" between centers, and 29-1/2" again to the rear. For 1-3/4" axles, the spacing tightens to 24-3/4", 29", and 24-3/4". That layout provides the right 3-1/2" to 4-1/2" clearance between the frame and axles so the suspension has room to flex without bottoming out.

Stable, Level, and Ready for the Miles Ahead

Once the hangers are welded in place, the triple-axle setup keeps the trailer balanced, the ride steady, and the components working in sync. It’s a simple, complete way to rebuild or set up a triple-axle suspension so it holds alignment and runs smooth for the long haul.

Specs

Kit Components

  • Front hangers (4): 1-1/2" tall
  • Center hangers (4): 2-1/2" tall
  • Rear hangers (4): 1-1/2" tall
  • Curved equalizers (4): 7-3/4" long
  • Shackle straps (16): 2-5/8" long
  • Shackle bolts (24): 3" long x 9/16" diameter
  • Locknuts (24): 9/16" diameter

Compatibility

  • Axle configuration: Triple
  • Axle capacity range: 2,000-lb to 7,000-lb
  • Spring type: Double-eye leaf springs (sold separately)
  • Application: Trailers with triple axles

Clearance

  • Trailer frame to axle clearance: 3-1/2" or 4-1/2", depending on axle size

Hanger Location Reference Table

Leaf SpringsA - Distance Between Front and 1st-Center HangersB - Distance Between Center HangersC - Distance Between 2nd-Center and Rear HangersD - Distance Between U-BoltsE - Distance Between Center of Axle and Trailer FrameAxle Diameter
SP-169275 (1020)24-3/4"29"24-3/4"28-1/2"4-1/2"1-3/4"
(typical 2,000-lb trailer axle)
SP-219275 (PR722)
SP-220275 (PR3)
SP-218275 (PR4)
SP-212275 (PR4B)
SP-111275 (PR5)
SP-198275 (PR6)
29-1/2"34"29-1/2"34"3-1/2"2-3/8"
(typical 3,500-lb trailer axle)

Technical diagram showing hanger spacing layout for triple-axle trailer suspension kit with labeled distances A through E between hangers and axles.

  • A: Distance Between Front and 1st-Center Hangers
  • B: Distance Between Center Hangers
  • C: Distance Between 2nd-Center and Rear Hangers
  • D: Distance Between U-Bolts
  • E: Distance Between Center of Axle and Trailer Frame

Note

  • Description: The above table provides an indication of where the included hangers can be mounted on your trailer. The distance between the hangers may vary depending on your specific application. Be sure to verify proper positioning before welding.

TSW-17 Triple Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs

Replaces APTT3





Customer Satisfaction Score:

Ratings & Reviews

4.9

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

by:



by:



by:

A#1



by:

AS PROMISED



by:

Great Product, great service, great val ue



by:



by:



by:

It's exactly what the pics show and delivery was super fast!!



by:

Good quality and Value.



by:

thank you for all your help , it works great . I would let any one to use you in the future . the delivery time was great and what I got from you was perfect.
Glen Bentley



by:

Worked great



by:

Fast delivery and great service ,Parts were all packaged nicely



by:

parts look to be as advertised

Jeffrey T. profile picture

Jeffrey T.

9/12/2016

the parts are working great , could not have done it with out the technical information that you made available ,



by:

All the products I received exactly what I needed, thanks a lot!



by:

quality products and fast shipping



by:

Fast shipping and food parts



by:

My order was complete and received in four days



by:

Worked excellent for trailer I built



by:

I will use them for all my trailer needs in the future very help full through my trailer build.

Thanks



by:

The hanger kit worked great! It fixed my old worn out suspension on my trailer, and it was easy to install.



by:

Excellent customer service, super fast shipping, it was a very smooth transaction



by:

Product well priced, cheaper than I could get local and fast shipping. Will send pics of finished project



by:

Ordered trailer parts - great prices and fast shipping. Very satisfied.



by:

I would give etrailer 5 stars all suspension parts ,brakes , wheels and tires were delivered without delay this tiny house is a work in progress the only miles I have put on it where to take it down and get it weighed all parts seem to be working fine.



by:

The best customer service , I have ever experienced, quick shipping, a great company


25
25

See what our Experts say about this etrailer Trailer Suspension Parts

  • Recommended Hanger Kit for a Triple-Axle Trailer Hanger Kit for Double-Eye Springs
    The recommended hanger kit for a Triple-Axle Trailer Hanger Kit for Double-Eye Springs is part # APTT1. This kit is designed to work on axles with capacities of 2,000 to 7,000 pounds. If your mobile home trailer axle is within this weight capacity this kit should work for you. I attached a picture that has a chart that shows exactly how you should space the axles when used with a 6-leaf spring for 7,000 pound trailer axles like part # e64SR.
    view full answer...
    Image 1 for
  • What is The Difference Between Having Trailer Axles Above or Below the Leaf Springs
    You can mount trailer axles above or below the leaf springs. The difference is just the amount of ground clearance that the trailer would end up having. The biggest advantage with the spring below the axle (trailer will be lower) is that you would have a lower center of gravity. The spring seats will need to be on the right side of the axle though when you go to install the new springs. Trailer axles have an arc to them so you can't just flip them over otherwise you would end up with...
    view full answer...
  • Where Do I Place the Spring Hangers on a Homemade Trailer w/ Three Axles?
    Hey Hyrum. I have no way of knowing where exactly to put the hangers on your homemade trailer. It depends on the length of the springs, equalizers, and what type of trailer it is. With a setup like you're dealing with I recommend putting the hangers back where they used to be. Hopefully the person who made the trailer did all the correct measurements originally. If not you'll need to disassemble the entire suspension system and start from scratch using something like the Triple-Axle Trailer...
    view full answer...
  • Galvanized Idler Hub That Fits Square #84 Spindle
    Let's start with the spindle and hub you asked about, and they are indeed compatible. Reason why is this spindle accepts hubs with inner bearing L68149 and outer bearing L44649, which is exactly what the Easy Grease hub you mentioned uses, so the two will work together: - Square #84 Spindle for 3,500-lb Trailer Axles # TRU47FR - Easy Grease Trailer Idler Hub Assembly for 3.5K Axles - 5 on 4-1/2 - Galvanized # AKIHUB-545-35-G-EZ-K And as for the hanger kit and leaf springs you mentioned,...
    view full answer...
  • Triple-Axle Trailer Hanger Kit Recommendation for 7K Axles
    The Triple-Axle Trailer Hanger Kit # APTT3 that you referenced is designed to work on axles with capacities of 2,000 lbs to 7,000 lbs so it should work very well for you. I attached a picture that has a chart that shows exactly how you should space the axles when used with a 6-leaf spring like a # e64SR. From the outer hangers to the inner hanger you will need 24-3/4 inches, in between the two center hangers you will need 29 inches.
    view full answer...
    Image 1 for
  • Leaf Springs and Shackle Straps for Triple Axle Trailer with 7-3/4 Inch Equalizers
    The issue you are experiencing is a result of leaf springs that are too long for your hanger spacing. You will want shorter springs and I recommend also going with a capacity more geared toward your axles. You will want to use the Triple-Axle Trailer Hanger Kit for Double-Eye Springs # APTT5 and # APTT3 for reference. These kits are rated for 2,000 to 7,000 lb axles with almost identical spacing. My recommendation for you is the 6-Leaf Double-Eye Spring for 5,300-lb Trailer Axles...
    view full answer...
    Image 1 for Image 2 for
  • 3rd Axle Addition on Fifth Wheel Toy Hauler
    You can absolutely add a 3rd braking axle to your trailer. You will simply want to match your current axle for dimensions and capacity. I've linked the page to your options we carry to assist. Then you will need to change your hanger locations so, I recommend using the Triple-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center # APTT3 and I've attached a help article to assist with the placement. The leaf springs you need will depend on the axle capacity...
    view full answer...
  • Recommended Leaf Springs and Equalizers for Triple Axle Trailer With Double Eye Springs
    I saw you were looking at double eye leaf springs so we will assume that is what you have. In regards to leaf spring hanger spacing, the most common for a triple axle trailer is 29-1/2" first to second (center to center), 34" second to third (center to center), and 29-1/2" third to last (center to center). Therefore, it would be best if you would place the leaf spring hangers accordingly. Once the leaf spring hangers are in the above positions then you have a few options based on axle...
    view full answer...
  • What is the Capacity of an Axle That Has Dexter 8-147 Hubs
    With you having a Dexter 8-147 hub, you will have a 3,500 pound capacity axle. The measurement you got with the lug bolts means you most likely also have their Vintage 4 on 9.4 bolt pattern, but with even wheels you need to measure center to center of bolts directly across from each other. However, the 8-147 hub is no longer being produced. They can still be found, but it is not going to be an easy process. What may be easier will be to replace the hubs with something much more common,...
    view full answer...
    Image 1 for Image 2 for
  • Dimensions for Spring Hanger Spacing Using the # APTT3 Triple-Axle Hanger Kit on a Boat Trailer
    The spring hanger mounting dimensions for the Triple-Axle Trailer Hanger Kit, item # APTT3, are as follows. From the center of the hole in the front hanger, to the center of the hole in the center front hanger, the distance should be 29-1/2 inches. From the center of the hole in the center front hanger, to the center of the hole in the center rear hanger, the distance should be 34 inches. And from the center of the hole in the center rear hanger, to the center of the hole in the rear hanger,...
    view full answer...
  • Where to Place Tandem Axle Slipper Springs on Trailer being Built
    The slipper side of slipper leaf springs need to face the rear of the trailer. To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger....
    view full answer...
    Image 1 for
  • 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...
    view full answer...
  • Comparing Dexter Heavy Duty Suspension Kit and Triple-Axle Trailer Hanger Kit
    The Dexter Heavy Duty Suspension Kit part # K71-360-00 has bronze bushings and wet bolts whereas the Triple-Axle Trailer Hanger Kit part # APTT3 has nylon bushings and standard bolts. The bronze bushing resist wear more than nylon and the wet bolts make for easy maintenance. The two kits are cross-compatible.
    view full answer...
  • Triple Axle Hanger Spacing for Trailer with 25-1/2 inch Long Springs Loaded
    The distance between the two center hangers will be more than the other distances since there are two equalizers on that leaf spring whereas the front and rear leaf springs only have one equalizer. You also have to consider the width of the equalizers when determining the spacing. A simple solution would be to replace your hangers and equalizers with the kit part # APTT3 and then use 29-1/2 inches between the hangers for the front axle and then 34 inches between the center axle hangers.
    view full answer...
  • Why do Trailer Suspension Hanger Kits Include Hangers of Different Heights
    The hangers of the part # APTT3 that you referenced are different heights because the center hangers attach to equalizers which then attach to shackles and then finally to the leaf springs. Since there are several components in this arrangement a slightly shorter or longer hanger is used for the center hanger so that when everything is put together the spring ends up sitting level. Basically the equalizer moves the attachment down and then the shackle straps move it back up and then depending...
    view full answer...
    Image 1 for
  • What Angle Should Shackle Straps be on a Triple Axle Trailer with Double-Eye Leaf Springs
    The angle of the shackle straps is not a precise measurement but you will want them to be around 45 degrees. The diagram may look different but staying around 45 degrees is where you will want to be. I have included a link to our FAQ article on double-eye trailer suspension for you.
    view full answer...
  • Hanger Spacing for Triple Axle Trailer with 24-7/8 Inch Long Double-Eye Springs
    When using a triple-axle hanger kit like # APTT3 with the 6-Leaf 24-7/8 inch long Double-Eye Springs # e64SR referenced in your question, you will want to have a distance of 29-1/2 inches from the center of the hole in the front hanger to the center of the hole in the center front hanger. From the center of the hole in the center front hanger to the center of the hole in the center rear hanger you are looking at a distance of 34 inches. Then from the center of the hole in the center rear...
    view full answer...
    Image 1 for
  • Advantages to a Spread Axle Trailer over a Tandem Axle
    Spread axle trailers are pretty hard on tires when you are turning since the front tires will scrub and wear out quickly, also they are much harder to back up and are harder on suspension components. Spreads do have a little more flexibility with loading and in some areas can carry more weight, but that is something you would need to check your local DOT laws to confirm.
    view full answer...
    Image 1 for
  • Troubleshooting Triple Axle Trailer with Rear Axle Off The Ground
    It is definitely not recommended to add different size wheels to one of your axles on your triple axle trailer. There is likely a miscalculation in axle spacing that is causing that third axle to sit off the ground. That definitely is not ideal and needs to solved. It is likely an equalizer, shackle strap, or hanger mismeasurement. Triple axle trailers do have different measurements than tandem axle trailers so you don't simply space the hangers out evenly. Based on your tire size,...
    view full answer...
    Image 1 for
  • Differences Between Triple Axle Hanger Kits APTT1, APTT3, and APTT5
    The differences are the dimensions of the hangers and equalizers of the three kits. The # APTT1 uses totally straight equalizers and taller center hangers. The # APTT3 uses more traditional sized equalizers and center and outside hangers that differ in size slightly. The part # APTT5 uses a standard sized equalizer and hangers that are all the same height. The part # APTT3 is the one that is the most commonly used. It would be my recommendation for your trailer.
    view full answer...
  • How to Determine the Spacing Between Axles when Building a 4-Axle Trailer
    There are several things to consider when positioning axles on a trailer. I have included a picture that will help some but other factors include the springs and other suspension components you will be using. Also, a 4-axle trailer can potentially be a little troublesome because when turning the wheels can scrub (scrape the ground sideways). The closer the axles are together within reason the less likely this is to happen. But on 4 axles I do not think you will be able to avoid it completely. If...
    view full answer...
    Image 1 for
  • What is Advantage of Using Equalizers with Trailer Suspension
    Hey Andrew, equalizers are a really great option instead of just having 3 axles independently attached to your trailer frame. Reason is that when you hit a bump or drive over a curb each axle you have now is going to take on the full weight of the trailer briefly. Equalizers allow for the weight of the trailer to spread out to all of the axles when you hit a bump instead. So I would strongly recommend installing a triple axle hanger/equalizer kit like the part # APTT3.
    view full answer...
  • Where Is Measurement Taken On 1-1/2 Inch and 2 Inch Hangers In Redline Trailer Hanger Kit # APTT3
    The height measurement of the hangers in the Redline Triple-Axle Trailer Hanger Kit, part # APTT3, is from the top of the hanger to the center of the bolt hole. The 1-1/2 inch tall hanger is the Redline Front/Rear Hanger for Double-Eye Springs, part # 115917 and the 2-1/2 inch tall hanger is the Redline Center Hanger for Double-Eye Springs, part # 115918. I am including a picture of the hanger and it shows where the dimension is measured.
    view full answer...
    Image 1 for
  • Suspension on Instigator 3-Axle Boat Trailer Hits Frame
    I did some research on your trailer and also read a few bad reviews from customers with the company. Since I do not have the trailer in-front of me, there is no way for me to say for certain that the suspension is mounted incorrectly. But, it definitely should not be hitting the frame under normal use. I would recommend having a trailer professional checkout your trailer to see if everything is mounted correctly. If you bought the trailer new, you may be able to contact the company and...
    view full answer...


< Previous
12



Do you have a question about this Trailer Suspension Part?


Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Alexander C
Updated by:
Alexander C
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.