Kit includes 3-1/4" tall front hangers, 1-1/2" tall rear hangers, 3-1/8" shackle straps and hardware for mounting springs to your 2,000-lb to 7,000-lb, single-axle trailer frame. Components for mounting axle to springs sold separately. Lowest Prices for the best trailer suspension from Redline. Single-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front, 1-1/2" Rear part number APS4 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Trailer Suspension > Suspension Kit > For Double Eye Springs > For 1-3/4 Inch Wide Spring > Single Axle > Redline

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Redline Redline

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

Redline Trailer Suspension

(28 reviews)


Code:   APS4

Retail:$32.09

Price:$20.95


Shipping Special

Shipping Weight: 9 pounds

Quantity: 







Redline Trailer Suspension - APS4

Kit includes 3-1/4" tall front hangers, 1-1/2" tall rear hangers, 3-1/8" shackle straps and hardware for mounting springs to your 2,000-lb to 7,000-lb, single-axle trailer frame. Components for mounting axle to springs sold separately.


Features:

  • Attaches 2 leaf springs (sold separately) to your trailer frame
    • Use table below to determine hanger location based on type of leaf springs
  • Achieves 5" or 5-1/2" clearance between trailer frame and axle, depending on axle size
  • Includes:
    • (2) 3-1/4" Tall front hangers (28-5)
    • (2) 1-1/4" Tall rear hangers without bushings (93003-3X)
    • (4) 3-1/8" Long shackle straps (115208)
    • (6) 3" Long x 9/16" diameter shackle bolts (9163B)
    • (6) 9/16" Diameter locknuts (916DLN)
  • Designed for use on trailers with single, 2,000-lb to 7,000-lb axles
  • Does not include components for mounting axle to springs


Hanger Locations for Single Axle

Leaf SpringsA - Distance Between HangersB - Distance Between Center of Axle and Trailer FrameAxle Diameter
SP-169275 (1020)20"5-1/2"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)
24-7/8"5"2-3/8"
(typical 3,500-lb trailer axle)

Note: 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.



APS4 Single Axle Hanger Kit - 1.75" Double Eye Springs - 2,000 lbs to 7,000 lbs








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Hanger can be configured to work as either a front or rear hanger on tandem- or triple-axle applications. Can be used on single-axle trailers as a front hanger only. Designed to suspend your double-eye leaf spring.

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Customer Reviews

Single-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front, 1-1/2" Rear - APS4

Average Customer Rating:  4.9 out of 5 stars   (28 Customer Reviews)


Kit includes 3-1/4" tall front hangers, 1-1/2" tall rear hangers, 3-1/8" shackle straps and hardware for mounting springs to your 2,000-lb to 7,000-lb, single-axle trailer frame. Components for mounting axle to springs sold separately.


- APS4

by: Mike B.11/14/2016


I inherited an aluminum trailer that ended up needing a complete overhaul and etrailer was the best resource I could have found. After researching extensively to find out what I needed and watching their videos on how to do it I ended up ordering an EZ-lube axle, galvanized hubs, springs and a hanger kit (in other words everything from the frame down). Everything shipped quickly and arrived in great shape. All the parts worked perfectly and I couldn't be happier! 316659



- APS4

by: Ken06/18/2015


Well made great product 204442


Comments

Working out no problems

Ken - 06/17/2016

18677



- APS4

by: Rik J.09/20/2016


The axle hanger kit arrived today. I have done a dry setup; everything fits as expected. Thanks for your excellent product and prompt delivery. Rik 296882



- APS4

by: Karen10/10/2015


Product arrived just as described and very quickly. This kit was a great way to drop the springs on our trailer enough for the axle to be put on correctly. 229667



- APS4

by: Scott09/04/2015


I ordered multiple items from etrailer and the experience was perfect. The products arrived exactly as described with super fast shipping (standard option). The communication was frequent and thorough. This company knows good customer service. I didn't have any issues, but don't have any worries with this company if any come up. 224044



- APS4

by: Jay R.06/29/2013


Product was shipped fast, arrived within a couple of days, and was packaged nicely. Not just thrown in a box. Someone took the time to wrap every piece. The quality of the product was so much beeyer then I was expecting, with the prices that I got. Will be ordering from this website in the future and so will everyone I talk to. 86756



- APS4

by: eric l04/24/2014


GREAT SITE! VERY DETAILED INFO (DIMENSIONS AND DESCRIPTIONS OF PRODUCTS)FREE FAST SHIPPING IN STRONG SEALED CARTONS. EVERYTHING I ORDERED WAS EXACT FIT . WILL BE ORDERING MORE PARTS SOON.MY OLD TRAILER IS STRONG AGAIN WITH NEW RUNNING GEAR 127195



- APS4

by: Jerry K.04/21/2015


I ordered a complete spring package for a OLD utility trailor. All parts were exactly what I ordered and I received them in aout 4 days. Price was in line w/other companies. It only took a few hours to change out everything. 187199



- APS4

by: Isaac H.11/23/2011


I order some suspension parts to rebuild my trailer and the service provided by etrailer.com was outstanding! They kept me posted on my order until it arrivied - 2-days early! I'll be back for all my future trailer needs! 27319



- APS4

by: Mike Cox10/11/2016


Arrived quickly and in good shape. Front hangers are going to tight tight for 1 and 3/4 springs. Going to have to spread the jaws a tad after welding on to get the spring eye in place. It will be a good test for my weld. 305439



- APS4

by: Jim G.08/29/2011


As advertised after just opening the box for inspection.... I would have hoped for bolts that were drilled and could be lubed... I guess that's asking too much.... 23038



- APS4

by: Bob08/17/2015


Great product, very good price, quick ship…Rose was very helpful, I was ordering the wrong things and she helped me get it just right. Thank you 219812



- APS4

by: Robert smith08/01/2011


Product well described and fit exactly.My trailer is back on the road because of E trailer.Ease of use and quick shipping is great. 20814



- APS4

by: Tom B.10/04/2016


Very happy with product deliver with speedy delivery& great pricing. Will definitely buy from again. AAA+++ 303182



- APS4

by: Kellen Hood12/06/2013


Easy to use and added 2 inches to my trailer clearance. Looks great and is very robust! 109368



- APS4

by: William S.08/21/2011


Quick delivery & parts worked well. Very happy with purchase. 22382



- APS4

by: Pat P.06/14/2011


Item was exactly as described, the quality is excellent. 16956



- APS4

by: John W.01/21/2016


Looks like standard hardware. No compla ints. 235918



- APS4

by: Dan12/05/2013


Smooth transaction with good communicat ion 109301



- APS4

by: gene c.03/23/2015


very good product just as advertised 180399



- APS4

by: steve b05/31/2013


everything needed for spring install 82734



- APS4

by: Bob05/18/2016


Just what I neede and it it great 250737



- APS4

by: rick03/13/2013


Great hanger kit, made well 70553



- APS4

by: db09/26/2016


great place to do business 299825



- APS4

by: Bill11/28/2014


Product was as described 162702



- APS4

by: jason s05/04/2015


went together great 189599



- APS4

by: Andy06/24/2016


Simple and strong 264745



- APS4

by: willy07/23/2012


well made product 48942

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Ask the Experts about this Redline Trailer Suspension
Do you have a question about this Trailer Suspension?


  • How to Raise the Height of a Boat Trailer to Avoid Scraping on Inclines
  • What I recommend, if the trailer has round axles, is an over-under conversion kit. For 3 inch round axles use # K71-385-00 and for 2-3/8 inch round axles use # K71-384-00. This of course will only work if the leaf springs are mounted to the bottom of the trailer now. What this kit does is allow you to put the springs on top of he axle without flipping the axle or welding. Otherwise what you could do is use taller hangers. All of the hangers would have to be raised the same amount. So...
    view full answer...

  • Trailer Spring Kit # 2-1020 Recommendation for an Old Boat Trailer Converted to a ATV Trailer
  • It sounds like you may have a vehicle leaf spring on your old boat trailer as we do not carry any leaf springs that are that length. The leaf spring that would closely match the axle capacity of your trailer would be # SP-169275. You are going to have to relocate your hangers as they are too far apart for the leaf springs I recommended. For a hanger kit I would recommend a Single-Axle Trailer Hanger Kit for Double-Eye Springs # APS4. You will want to install the hangers 20 inches...
    view full answer...

  • Hanger Spacing Recommendation for Leaf Spring that is 25-1/4 inches Long
  • A leaf spring like the part # PR4 has a distance of 25-1/4 inches between the spring eyes. I did some checking and the hanger kit you would want is the Single-Axle Trailer Hanger Kit # APS4. And the distance between the spring hanger centers should be 24-7/8 inches.
    view full answer...

  • Hanger Kit # APS4 Distance Recommendation for Use with Double Eye Spring # PR5
  • You have everything correct in your setup. You have all of the right parts in the right places and you have all the right measurements for everything. The 5-Leaf Double-Eye Spring, part # PR5, is the right spring to use with the Single-Axle Trailer Hanger Kit for Double-Eye Springs, part # APS4, that you have. The reason the shackle angles toward the the axle is because the spring length is 25-1/4 inches long and the correct distance between the hangers is 25-3/4 inches. Since the spring...
    view full answer...

  • What Is The Proper Hanger Spacing For A 3 Leaf 1,750 lb Capacity Leaf Sping
  • The spacing of leaf springs varies depending on how many axles are on your trailer and the position of the spring. For a 3 leaf, 1,750 lb spring like part # PR3 the hanger specifications in the Redline Trailer Supplies Catalog are as follows: Single axle - 25-3/4 inches Tandem axle - A=29-1/2 - B=29-1/2 Triple axle - A=29-1/2 - B=34 - C=29-1/2 The recommended hanger kit for a single axle trailer is Single Axle Trailer Hanger Kit, part # APS1, or part # APS4. For tandem axle, the...
    view full answer...

  • How to Mount Redline Single-Axle Trailer Hanger Kit Part # APS4 To Trailer Frame
  • I contacted our representative at Redline and he informed me that the Single-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4 Front, 1-1/2 Rear, part # APS4, must be welded to the trailer frame. He informed me that there should be a hole to make a Button Weld. I would recommend having a trailer professional install part # APS4.
    view full answer...

  • Leaf Spring, Hanger Kit, and U-Bolt Kit Recommendation for a Boat Trailer
  • Let's start with leaf springs. For that you will want to pick a set that can handle the weight of your trailer when it is loaded (obviously). Since your boat weighs 3,000 lbs and we have to factor in the weight of your trailer the # PR626 would be a great choice as it is a 4,500 lb axle spring. The hanger kit you would want is the part Single-Axle Trailer Hanger Kit # APS4. And the distance between the spring hanger centers should be 24-7/8 inches. Typically this hanger kit would get...
    view full answer...

  • How to Raise a Boat Trailer to Gain Ground Clearance
  • One way you can lift a trailer is by moving the axles from being above the leaf springs to being below them. The diameter of your trailer axle will determine the size of the parts that you will need to order. If your axle is 3 inches diameter, the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00, would be a great choice and if your axle is 2-3/8 inch diameter you could use the Over-Under Kit, # K71-384-00. These kits can be installed without welding but the manufacturer...
    view full answer...

  • Recommended Double Eye Leaf Springs and Hanger Kit for 3,500 Pound Axle Trailer
  • For double eye leaf springs, I recommend going with the 4-Leaf Double-Eye Spring # SP210275. This spring is 25-1/8 inches long x 1-3/4 inches wide and designed for 3,500 pound axles. These springs are a common length for 3,500 pound trailers. One spring is included with the part number, so you will want to order 2 of the same spring in order to replace both sides. A suspension kit will provide you with new hangers, shackle bolts, shackle straps, and locknuts needed for your new leaf...
    view full answer...

  • Hanger Spacing Recommendation for Leaf Spring # PR4
  • Based on the description of the springs you have it sounds like you have the 4-Leaf Spring part # PR4. This is a 4 leaf spring that measures 25-1/4 inches from eye to eye. I did some checking and the hanger kit you would want is the Single-Axle Trailer Hanger Kit # APS4. And the distance between the spring hanger centers should be 24-7/8 inches.
    view full answer...

  • Switching From Slipper Springs to Double-Eye on a Single 2K Axle Trailer with Square Axle
  • To switch to double-eye spring suspension I recommend getting parts individually since the u-bolts cannot be swapped out of kits. The spring in the kit is # SP-169275. We have a few different u-bolt kits for square axles including # CE23102 for 1-1/2 inch square axles. For a 1-3/4 inch square axles you can use u-bolt # 175130 and plate # 116308. And for 2 inch square axles we have # CE23103. You will also need a new hanger kit since double-eye springs use different hangers than slipper...
    view full answer...

  • Hanger Placement with 3,500 lb Axle with Hanger Kit part # APS4 On Trailer with Axles Under Springs
  • Your axles being under the leaf springs will not change the hanger location recommendations listed for the Single Axle Hanger Kit part # APS4. You would want to have the hangers 25-3/4 apart measured on bolt center. However, since your axles are below the springs you would not need to have 5 inches between the center of the axle and the trailer frame.
    view full answer...

  • Can a Coleman Fleetwood Pop Up be Converted From Slipper Spring to Double Eye
  • If you wanted to convert your slipper spring suspension to double-eye suspension you certainly could. It would be just a matter of changing springs and hangers. You would need to go with a leaf spring that is rated for the weight of your trailer when it is loaded an ready to go. I attached a page that has all of the double eye springs we offer. At the top is a chart that has all of the springs and their capacities. Select the capacity you need and then on the product page the correct...
    view full answer...

  • Leaf Spring Hanger Options for 8x8 Tilt-Bed Trailer
  • For the springs, I'd recommend the # SP-169275 spring, which is designed for 2K axles and measures 20-3/8 inches from eye center to eye center. If you need a U-bolt kit for this axle, # APUBR-10 will work well. The hanger kit you use will depend on how much space you want between the axle and the trailer frame. Hanger kit # APS1 provides between 4-1/4 to 4-1/2 inches of clearance. # APS3 would give between 4 and 4-1/2 inches of clearance. # APS4 is 5 to 5-1/2 inches and # APS5 is between...
    view full answer...

  • How is the Height Measured on Trailer Suspension Hanger 93003-3X
  • The measurement on hanger # 93003-3X is 1-1/4 inches measured from the top of the hanger to the center of the hole the spring hangs from.
    view full answer...

  • Availability of Trailer Suspension Shackle Bolts in 4-inch Length and 9/16-Inch Diameter
  • We do offer leaf spring shackle bolts as separate items. The linked page will show you all lengths, including 4-inch and 4-1/2-inch. In your required 9/16-inch diameter the longest bolt we have is the Redline # 34007-187-00 which is 3-7/16-inches. The 4-inch and longer shackle bolts are different diameters, such as the Redline # 38-4TB which is 4-inches x 3/8-inches diameter. You will be better off using hangers of the correct width for your 1-3/4-inch springs, rather than shim them....
    view full answer...

  • 3,500 lb Leaf Spring and Hanger Kit Recommendation for Homemade Trailer
  • You have a pretty interesting leaf springs setup on your trailer. It appears as if it is an automobile spring setup based on the length of the springs. That is a pretty small trailer, are you sure you want to go with such heavily rates springs? Going with higher rated springs will only give you additional spring capacity. If the axles or frame of the trailer aren't rated that high you don't effectively increase the capacity of the trailer. For a 3,500 lb spring the part # SP-212275...
    view full answer...

  • Hanger Spacing Dimension for the Leaf Spring PR427 on a Trailer
  • The hanger spacing you will need to use for the # PR427 with the # ASP4 hanger kit is 25-3/4 inches. One end of the leaf spring will overshoot the hanger and the shackle makes up the difference. This allows both ends of the spring to be at the same or close height and allow the suspension to move like it needs to.
    view full answer...

  • Could the Single-Axle Trailer Hanger Kit # APS4 Be Used for Mobile Home Leaf Springs
  • If the springs you have are 1-3/4 inches wide the hanger kit part # APS4 that you referenced will technically fit and work with what you have. Since you are using axles we aren't familiar with I can't give you hanger spacing dimensions.
    view full answer...

  • Replacement Parts to Rebuild Trailer Suspension on 1976 EZTrail
  • All of the products you listed will work together just fine. Keep in mind, if your current springs are not 26 inch springs, like the # SP-124275 you referenced, your hangers, # APS4, will not be in the exact same position as your current ones. When repositioning everything the most important factor is keeping the axle in the same location it currently is. The U-Bolt Kit # APUBR-10 is correct for a 2,000 pound axle and the Shackle Bolt # 166081 will work too. It's hard to tell by the...
    view full answer...

  • Rear Hangers in Trailer Suspension Kit # APS4 Do Not have Bushings
  • The trailer suspension hanger kit # APS4 does include hangers that do not have bushings like you said. Adding bushing definitely would not hurt if they will fit. The bolts are 9/16 inch which is what the holes in the hangers accept. There likely isn't space for a bushing. The other issue is that there are no bushing we carry that have a 9/16 inch outer diameter (which would then require a smaller bolt). You will want to make sure the hangers without the bushings are well lubricated using...
    view full answer...

  • Tall Single Axle Hanger Kit and Spacing Required Between Hangers
  • Of the hanger kits we offer the # APS4 is going to be the tallest that we offer. The hanger spacing you will need to use for the leaf springs like # PR427 with the # ASP4 hanger kit is 25-3/4 inches.
    view full answer...

  • Are the Threads of the Shackle Bolts of the Single-Axle Trailer Hanger Kit Fine or Coarse
  • The threads of the shackle bolts included with the Single-Axle Trailer Hanger Kit # APS4 are fine and they include the correct matching locknuts.
    view full answer...


Do you have a question about this Trailer Suspension?






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Information for this part was:

Updated by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Reno H
Expert Research:
Jameson C
Expert Research:
Adam R
Photos by:
Zach O
Updated by:
Sarah W
Updated by:
Alexander C

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Info for this part was:


Updated by:
Lindsey S

Expert Research:
Michael H

Expert Research:
Reno H

Expert Research:
Jameson C

Expert Research:
Adam R

Photos by:
Zach O

Updated by:
Sarah W

Updated by:
Alexander C

At etrailer.com 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.




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