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

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

Item # APT8

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Trailer Leaf Spring Suspension

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Shipping Weight: 21 lbs

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etrailer Spring Mounting Hardware - APT8
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Leaf-spring mounting kit includes 2-1/2" tall front hangers, 4-1/4" 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. Lowest Prices for the best trailer leaf spring suspension from etrailer. Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 4-1/2" Center part number APT8 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (21)
  • Q & A (19)
  • Videos (1)
  • Photos
  • Used (1)
  • Why etrailer?

etrailer Trailer Leaf Spring Suspension - APT8

  • Hangers
  • Suspension Kits
  • Spring Mounting Hardware
  • Double Eye Springs
  • Tandem Axle
  • etrailer

Leaf-spring mounting kit includes 2-1/2" tall front hangers, 4-1/4" 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.


Features:

  • Attaches 4 leaf springs (sold separately) to your trailer frame
  • Includes:
    • (4) 2-1/2" Tall hangers
    • (2) 4-1/4" Tall hangers
    • (2) 7-3/4" Long curved equalizers
    • (8) 2-5/8" Long shackle straps
    • (14) 3" Long x 9/16" diameter shackle bolts
    • (14) 9/16" Diameter locknuts
  • Designed for use on trailers with tandem, 2,000-lb to 7,000-lb axles
  • Does not include components for mounting axle to springs


TSW-S6 Tandem Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs

Replaces APT8







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


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for etrailer Trailer Suspension - Leaf Spring Suspension - APT8 Review

Today we're going to be taking a look at the Tandem Axle Trailer Hanger Kit for double eye springs. The leaf spring mounting kit is going to come with the equalizers. It's going to come with your front hangers, center hangers, and rear hangers. It's also going to come with necessary hardware. Now the components needed for mounting the axle to the springs, those are going to be sold separately. This kit is going to attach four leaf springs to your trailer frame.

Again, we're just going to go over the different components that it comes with. It's going to come with four 2 1/2" tall hangers. These are your center and rear hangers. Now the hanger measurement is taken from the center of the hole here at the bottom, to the top of the hanger. That's about 2 1/2". You're also going to have a couple of holes here at the top for spot welding.

Again, you're going to get four 2 1/2" tall hangers. These are you center and rear hangers. You're going to get two 4 1/4" tall hangers. These are your front hangers. Again, getting the hanger length, or height is measured from the center of that hole to the top of the hanger, so that's where we get the 4 1/4" measurement from.

You're going to get two 7 3/4" long curved equalizers. These have the 9/16" diameter center and end holes. It's going to come with the bushings installed there. That 7 3/4 is measured from the center of this hole straight across to the center of the opposite hole, so 7 3/4". You're going to get eight 2 5/8" long shackle straps, 2 5/8" measurement comes from measuring from the center of one hole to the center of the other.

You're going to get 14 3" long 9/16" diameter shackle bolts, and you're going to get 14 9/16" diameter lock nuts. Now this kit is designed for use on trailers with tandem, 2,000 pound to 7,000 pound axles. The front hangers, which again, these are the tall ones. The overall height measurement, measuring from very top to very bottom, those are going to measure about 4 7/8". If we take a measurement of the overall width, outer edge to outer edge is about 2 5/16". Edge to edge this direction is going to measure about 3". Now when it comes to the shorter hangers, these are going to give us an overall height measurement of about 3" to 3 1/16". Going this direction we're looking at 3". Width measurement again, 2 5/16". All the hangers, the tall and the shorter ones, these are all going to have the internal measurement of about 1 15/16". Everything is made from a nice, durable, steel construction. Your hangers are going to have a steel thickness of about 3/16" thick. That's going to do it for today's look at the Tandem Axle Trailer Hanger Kit for double eye springs.


Customer Reviews

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 4-1/2" Center - APT8

Average Customer Rating:  4.8 out of 5 stars   (21 Customer Reviews)

Leaf-spring mounting kit includes 2-1/2" tall front hangers, 4-1/4" 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.

- APT8
by:

Purchased a trailer that looked real good, after a couple months when I was getting ready to install brakes and paint the frame, I noticed the suspension really needed rebuilt. Ordered hangers, equalizers, and new leaf springs. Everything came fairly quickly, unfortunately in transit 2 of the 4 leaf springs got lost, but were immediately shipped/replaced by the company. Great customer service, great help with anything you may have questions with. Appears to be great quality material so far. I will maintain to use etrailer for any of my trailer needs. 565504



- APT8
by:

I have built numerous trailers and the price , speed on delivery, and quality from etrailer can not be beat. Very good outfit. 729054



- APT8
by:

Everything arrived on time and as it was expected. I am very satisfied 725283



- APT8
by:

Works perfect, ivw been shopping around quite a bit and have found etrailer to be very easy to use and very quick to deliver. you have our business now, thank you. 721711



- APT8
by:

Glad I chose etrailer for my purchase will definitely buy from them again, I had a old boat trailer that was given to me from a friend will convert the boat trailer into a BBQ concession trailer later with heavier axles and springs now using the axles and springs from that trailer to the new one for my UDS smokers, I have 5 of them to mount to the new one making them dedicated to that trailer. 710992



- APT8
by:

Got product in a timely manner. Also order was correct and complete. All hardware is made of quality materials. 705189



- APT8
by:

No issue with this product. Will purchase again 675557



- APT8
by:

products were as expected , and prompt service . thanks . 586507



- APT8
by:

Springs work great 579193



- APT8
by:

The trailer parts I need are always available and priced well. Customer Service folks are knowledgeable and very helpful. The orders ship and arrive so fast that I forget it isn't local. I really enjoy doing business with this Company. 482564



- APT8
by:

Works as designed. 478493



- APT8
by:

Good to business with a company that keeps there customers informed about there order A real nice feeling for service and price I'll be back the next time I need trailer supply's 476124



- APT8
by:

just what I needed ,thanks 452694



- APT8
by:

Excellent value. Hangers and straps are basic stamped and punched pieces, but accurate and functional. Equalizer is sturdy. 424585



- APT8
by:

I am very pleased with the Loaded backing plates, drums, bearings and tandem axle hanger kit. All appear to be better quality than what came on the trailer originally 400667



- APT8
by:

ordered springs,hanger kit and other parts! shipping was free but opted to get 3 day instead! parts arrived following a email they were shipped the next day! I was amazed at the speed of this transaction from start to finish!!! a+ great customer service and selection of parts! thanks e-trailer staff 332524



- APT8
by:

Quick Delivery , just in 2 days. 334980



- APT8
by:

Got the product quickly and was exactly what was ordered. Good follow up and notification on product shipment. 319867



- APT8
by:

I bought this kit to replace the equalizers and shackles on my tandem axle trailer. Buying the kit from etrailer was cheaper than buying the parts locally including shipping. 172062



- APT8
by:

All parts were delivered quickly and were just what I needed. All on trailer and just as described. 159176



- APT8
by:

Anytime that you want to get great service and excellent quality parts...........................this is where you will find it. 120990


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Ask the Experts about this etrailer Trailer Leaf Spring Suspension

Do you have a question about this Trailer Leaf Spring Suspension?


  • Why is Center Hanger Longer for Tandem Axle Trailer Hanger Kit
  • The center hangers in the Tandem-Axle Trailer Hanger Kit # APT8 that you recently purchased are indeed longer. This is actually pretty common for tandem axle trailers. The reason for the extra length on the middle hanger is related to the shackle straps of the equalizer. You want this hanger to be a bit longer to compensate for how the shackle straps move the spring higher up. I have attached an image to better clarify this. It is possible for the shackle to flip like you described,...
    view full answer...

  • What Are the Correct Replacement Leaf Springs for 6,000 lb Axle
  • There are leaf springs available with measurements close to 25" from center of spring eye to center of spring eye, though the correct one is going to depend on your axle capacity, which should be stamped onto the axle itself. Knowing this information is going to be important to get you the correctly rated springs. The options for you are going to be 6-Leaf Double-Eye Spring # SP-222275 which is for 5,300 lb axles and is 24-7/8" from center of spring eye to center of spring eye. Please...
    view full answer...

  • How to Find the Correct Replacement Equalizer
  • The Tandem-Axle Trailer Hanger Kit for Double Eye Springs # APT5 may have the correct equalizer but you will need to measure the current equalizer to find out. The length from the center of the left-most eye to the center of the right-most eye of your equalizer needs to be the same as the 7-3/4 inch measurement in this kit. Since you said the shackles are hitting the frame I recommend using a kit with a center hanger that is longer than the 3-3/4 inch hanger that comes with Kit # APT5....
    view full answer...

  • Installation of Hanger Brackets and Springs for Tandem Trailer Axles
  • It is not uncommon for the trailer hangers on a tandem axle trailer to be all the same size or for there to be different sizes that can be 1-1/2 to 2 inches different in height when you compare the center hanger to the front and rear. For example, the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 4-1/2" Center # APT8 has that 2 inch difference in size. I've attached an article on suspension to help further as well. You will want to make sure you position...
    view full answer...

  • 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...
    view full answer...

  • How to Determine Hanger Spacing on a Tandem Axle Trailer
  • It depends on the leaf springs you are using. Basically you will need to mock it all up before permanently installing anything on the trailer. Generally speaking the distance between hangers would likely be 24-3/4 inches on center to 29-1/2 inches on center but again it depends on the springs being used. These are just rough guide lines and really the only way to get the right spacing for a given trailer is to mock everything up and adjust as needed. Also, even though you asked about...
    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....
    view full answer...

  • Dimensions of Center Hanger in Redline Tandem-Axle Trailer Hanger Kit for Double-Eye Springs APT8
  • The spring hangers included in Redline kit # APT8 are intended for weld-on installation. Hanger part # E4139 that is included in the kit does have two holes that are for attachment of your springs. This part of the hanger will not be welded. I pulled one of these from our warehouse to measure its height and found the actual height to be 4-3/4-inches measured tip to tip; width is 3-inches. From the center of the 9/16-inch hole to the top edge of the hanger measures the specified 4-1/4-inches....
    view full answer...

  • 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...
    view full answer...

  • Hanger Kit Recommendation for a 6K Axle on a Tandem Trailer
  • There are two spring options that would work for you, the part # SP-115275 that you referenced or the 5 Leaf Spring part # SP-111275. The only difference is that the # SP-111275 is a multi-leaf spring with a 100 lbs more capacity than the # SP-115275. Either would work fine for you, I would go with the # SP-111275 just because of the additional capacity, and with a multi-leaf spring if a leaf fails your trailer wouldn't be completely un-usable. You would be able to limp home to fix the...
    view full answer...

  • Troubleshooting Trailer Equalizer that Tilts to One Side
  • Normally if the equalizer is tilted like what you have typically it's because the trailer is not sitting level. The side tilted up is typically pointed down towards the ground. It's hard to see in your picuture but it almost could be the case based on the angle of the frame and the ground in the background. Otherwise it indicates that either a leaf spring is too long or the center hanger is not properly located. I'd try measuring the distance between all of the hangers on one side of...
    view full answer...

  • Troubleshooting Trailer Shackles that Reverse on a Trailer Over Bumps
  • The equalizer on your trailer suspension needs to be able to move, you might have leaf springs that are too short or your spring hangers are too far apart. Typically when people have this problem the solution is to have the spring hangers brought in closer together.
    view full answer...

  • How Tight Should Trailer Suspension Shackle Bolts Be Tightened
  • We recommend that shackle bolts be tightened fully, then backed off slightly to allow free movement. For the distance between the center of the axles 30 inches is the recommended distance to use with a 26 inch long leaf spring similar to the # SP-212275. Especially if the shackle angles look good.
    view full answer...

  • Leaf Spring Bushings For Tandem-Axle Hanger Kit # APT8
  • Our Tandem-Axle Hanger Kit, # APT8, comes with the bushings already pressed into the equalizers, but it does not include the bushings for the leaf springs. If you need bushings for your leaf springs, you will want to pickup up 8 of part # TRBU11566 for standard nylon bushings or we offer Lippert's Never Fail Bushing Set, # LC279684. This set includes 8 bushings, so you will only need to purchase a quantity of 1. The Never Fail bushings cost more, but they will perform much better...
    view full answer...

  • Tandem Axle Hanger Kit With 7-Inch Equalizers and 4-1/2-Inch Hangers
  • We offer a Tandem-Axle Trailer Hanger Kit for Double-Eye Springs from Redline, part # APT8, that includes 7-3/4-Inch long curved equalizers and both 4-1/2-inch and 2-1/2-inch tall hangers. The shackle straps in this kit are 2-5/8-inch long measured from hole center to hole center, but we do offer longer shackle straps as separate components. For example, part # TRSL350 is a 3-1/2-inch strap (measured eye to eye) and 4-3/4-inches overall. I have included a link to our main page for trailer...
    view full answer...

  • Availability of Replacement Trailer Suspension Parts in Kit Form
  • The Redline Tandem-Axle Trailer Hanger Kit you referenced, part # APT8, does include the hangers as you noted. All of our kits include the hangers. If you do not want them you can order the other components as individual items. The linked page will show you all trailer suspension component parts like equalizers, bushings, shackle links, bolts, etc. and you can select only the items you need. You can use 2 of # TREQE1, 8 of # 115052 and 14 of # 166081.
    view full answer...

  • Trailer Suspension Hanger Kit that Uses 356 Equalizer or the Individual Parts to Make a Kit
  • No, none of the suspension hanger kits we have use equalizer # TREQ356. You would have to get the parts individually or get a kit with the proper sized hangers and shackle straps and just add additional equalizers. For a 2-9/16 inch hole center to center shackle strap we have # TRSL256. For bolts you can use # 126B2 for a wet bolt and nut or # 166081 for a regular bolt with nut. For the hangers though there are lots of options and I don't know exactly what you need so I have included...
    view full answer...

  • Why Are Shackle Straps Hitting Frame When Re-Building Trailer Suspension
  • The problem seems to be mostly that your shackle straps are hitting the frame, and the reason for this is almost certainly because the 3-1/8" Shackle Strap # TRSL313 you are using are too long. The other possibility was the hangers being too short but that is unlikely considering the lengths you gave. What I recommend is trying out the 2-5/8" shackle straps from the the # APT8 kit you have, as those are the typical length for a tandem axle trailer, while 2-1/4" straps such as # TRSL225...
    view full answer...

  • Solution for Slowing Corrosion Development on Trailer Suspension Comonents
  • This may seem silly but if you spray a lubricant like WD40 on the metal surfaces after cleaning them the oil will inhibit the ability of the water to contact the metal. Similar to how keeping a bike chain lubricated allows it to prevent rust development. But if you are dipping the trailer in salt water rust is basically inevitable.
    view full answer...


Do you have a question about this Trailer Leaf Spring Suspension?


Used Items Available

Condition: Missing Parts

Notes: This item is new and unused and is simply missing one of the shackle straps.

Our Price: $38.99

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Info for this part was:

Updated by:
Lindsey S
Updated by:
Sarah W
Updated by:
Alexander C
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Installed by:
Cole B

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