This 6-leaf double-eye spring is 26" long x 1-3/4" wide. It is designed for use with 4,500-lb trailer axles. Lowest Prices for the best Trailer Suspension from Redline. 6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles part number PR626 can be ordered online at or call 800-298-8924 for expert service.
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Trailer Suspension > Leaf Springs > For Double Eye Springs > For 1-3/4 Inch Wide Spring > 4500 lbs > 6 Leaf > 26 Inch Long > Redline

6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles

Redline Trailer Suspension

(35 reviews)

Code:   PR626



Shipping Special

Shipping Weight: 17.13 pounds


Redline Trailer Suspension - PR626

This 6-leaf double-eye spring is 26" long x 1-3/4" wide. It is designed for use with 4,500-lb trailer axles.


  • Flexes to absorb road shock and provide smooth ride
  • Reduces wear and tear on trailer
  • Ensures level ride on bumpy and uneven surfaces
  • Mounts to trailer frame with hangers or a hanger kit (sold separately)
  • Includes nylon bushings


  • Number of leaves: 6
  • Spring width: 1-3/4"
  • Eye diameter: 9/16"
  • Individual leaf thickness: approximately 5/16"
  • Overall stack height: 1-7/8"
  • Spring capacity: 2,250 lbs
  • Axle capacity: 4,500 lbs
  • Dimensions: see table
  • Quantity: 1 spring

Double-Eye Spring

Part NumberABC

Note: To ensure proper axle alignment and suspension performance, leaf springs should always be replaced in pairs.

Leaf springs are an integral part of your trailer suspension system. The double-eye spring is suspended at the ends by hangers that attach to its eye or, in the case of tandem-axle or triple-axle systems, into hangers in the front and rear and an equalizer or equalizers in the center. To determine the type of hangers or hanger kit you need, you must know the specific type of leaf spring you have, as well as your axle diameter and capacity. Depending on the hanger kits used with them, springs can be configured to work for single-, tandem- or triple-axle applications.

PR626 Trailer Double Eye Spring - 6 Leaf - 2,250 lbs

Video of 6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles

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

Video Transcript for Redline Trailer Suspension PR626 Review

Today we are going to be reviewing number PR626, the 6-Leaf Double-Eye Spring for 4,500-lb Axles. When ordering a spring there are a few things you do need to know first. This spring measures 26 inches long by 1-3/4 inches wide. You will need to know the springs half-length which is measured from the center of the mounting eye to the center of the spring here at the leaf bolt. This spring has a 13-inch half-length. One final measurement you will need to know is the spring height. To get the spring height you will need to draw an imaginary line from the center of the mounting eye to the center of the mounting eye.

Using that imaginary line you will actually measure from it to the spring surface giving you the spring height. In this case, it is 3 3/4 inches. You will notice that mounting points are two 9/16 holes with nylon bushings in them. These nylon bushings help to prevent metal on metal contact while the spring is mounted on the trailer. And that does it for part number PR626, the 6-Leaf Double-Eyed Spring for 4,500-lb axles.

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Customer Reviews

6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles - PR626

Average Customer Rating:  4.9 out of 5 stars   (35 Customer Reviews)

This 6-leaf double-eye spring is 26" long x 1-3/4" wide. It is designed for use with 4,500-lb trailer axles.

- PR626

by: Donald K.07/07/2014

First, I want to thank Adam R. for his help in the selection of the right spring. It installed perfectly within 4 to 6 hours. Everything matched up without any trouble. The biggest problem was getting the old spring off. It took 4 to 5 days. The spring was delivered ahead of the designated delivery date. This is the second item I have order from E Trailer and I have had great results on both items. 139720


Just fine

Donald K - 07/07/2015


- PR626

by: Jim J10/20/2014

I ordered leaf springs and associated attachment hardware. I was quite amazed at how quickly the order was delivered even though the box weighed close to a hundred pounds. The order was complete and error free. The trailer was much improved by the installation and I look forward to using it. I have used in the past and it's my first internet stop for trailer parts. 156972

- PR626

by: John N03/01/2011

I ordered a pair of PR626 leaf springs from etrailer. I received the shipment within the week. The product was as advertized and appears to be of good quality. Time will tell but I have every expectation the springs will be fine. Notification of order status and tracking was outstanding. Couldn't ask for better service from an online retailer. 8194

- PR626

by: Mike Piper11/28/2012

Items shipped very fast. Everything looks to be of good quality and exactly what i ordered. I'm rebuilding a tandem trailer that my grandfather built approx 40 years ago and these parts will help me to rebuild like new again. I will use your services again. And will recommend your company to my friends and coworkers. Thank You 60145

- PR626

by: B Tanko06/01/2012

I was able to search the website easily and found the part I needed quickly. Etrailer even had a schematic that explained exactly how to measure the part to be sure I was ordering the correct spring. I watched a short video on installation and was ready to go. As usual, it fit perfectly and the installation was easy. 42398

- PR626

by: Malcolm Z03/11/2015

I haven't had the chance to open product yet but I'm sure it's great. I orderd a few times from etrailer and I haven't had a bad experience. In fact, they are great! From sales to delivery. Sales personnel are friendly, knowledgeable and go beyond to help you. 177890

- PR626

by: Kevin VH10/22/2013

I replaced all four springs on my trailer. They fit as good as the old ones. I also bought all new U-bolts to make installation easier. The price was reasonable and Shipping was quick. Even being over a Holiday weekend. Thank you. 104775

- PR626

by: John M05/11/2014

The new springs lifted the trailer to proper height. It rides like it is supposed to now, and they bolted right in. Three hours later all four springs were in and ready to go. 129987

- PR626

by: Robert G.05/20/2011

The one thing you could have mentioned about the product was the length eye-to-eye. Other than that it was shipped fast and was received in a very timely manner. 14896

- PR626

by: Kerry V.06/04/2014

Outstanding service, super fast shipping, and excellent quality parts. I will be looking forward to more of my parts needs in the future from 134333

- PR626

by: Rich M.12/05/2013

The springs were exactly as described and arrived in a reasonable time. Doing business with Etrailer was fast and easy. I've bookmarked their website. 109275

- PR626

by: Tyson09/24/2012

I was very impressed with E Trailer's service. They shipped my package very quickly and I got exactly what I ordered. Very good customer service. 55602

- PR626

by: Israel09/26/2015

Excellent springs for your trailer. I ordered a pair and have now decided to order another pair to install on my horse trailer 227790

- PR626

by: Frank07/24/2013

Springs shipped very quick was the exact replacement part I ordered. Was back on the water in 5 days after purchase Thank you 91300

- PR626

by: Brian N.04/10/2013

These springs were exactly as described. Great quality. Ordering was a totally hassle free process. Thank you etrailer! 75319

- PR626

by: Capt Buddy04/18/2015

Very happy with the service, and the product is great, got them so fast I was hardly ready to put them together!! 186188

- PR626

by: Capt Buddy04/18/2015

Very happy with the service, and the product is great, got them so fast I was hardly ready to put them together!! 186187

- PR626

by: josh08/28/2013

Springs look solid. My u-bolts were too short to install these springs so I need to order the 7 inch bolts. 97335

- PR626

by: Dave W.07/23/2012

The springs were delivered quickly and appear to be very good quality. The product was just as described. 48935

- PR626

by: jimmy w08/22/2014

The leaf springs worked out great on the trailer. Great service and will be dealing with them more. 148136

- PR626

by: Margarito08/22/2015

The product is very good and customers service excellent and very good price 221001

- PR626

by: John03/03/2011

Great service, thanks. If I need more parts I'll use your service. 8341

- PR626

by: Larry10/23/2012

product came as advertised. prompt service. I will order again. 57975

- PR626

by: M. Giorgio07/04/2012

Great service and great prices for great product Tank you!!!! 46711

- PR626

by: Jeff03/24/2014

Everything was as advertised and delivered on time. Thanks 121971

- PR626

by: Chrisd08/11/2015

Awesome, and an amazing Price! Very happy I bought these. 218403

- PR626

by: Chris03/04/2015

Product looks great, as advertised. Super fast shipping! 176932

- PR626

by: Darrell A05/06/2015

Great fast professional service, good fit, good price 191048

- PR626

by: JR07/09/2015


- PR626

by: Robert R.03/20/2008

Excellent Springs Great Springs, made in the U.S. 684

- PR626

by: Tony R06/20/2011

the producs and your service were superb 17430

- PR626

by: Dean04/06/2015

Exactly as described. Great price too. 183716

- PR626

by: MIKE B.10/17/2014


- PR626

by: BAJAFOOL07/16/2014


- PR626

by: Bruce04/22/2015

great 187294


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

  • Hanger Spacing Dimensions for Installing Double-Eye Leaf Springs on a Trailer
  • The Trailer Leaf Spring, 2250 lbs. 6 Leaf, item # PR626, is sold as a replacement spring for older trailers and measures 26 inches for eye to eye, center to center. If you are replacing the springs and hangers you will need to use the same center to center dimension as the original mounting brackets. These springs are designed for a 4,500 pound axle. If you are building a new trailer you will need to determine the weight capacity of the axle you will be using and order springs and hangers...
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  • How to Determine Which Leaf Springs to Order for Tandem Axle Camper with 3,500 Pound Axles
  • When replacing the leaf springs on your camper you will need to match all of the dimensions and the spring capacity as closely as possible to the original spring. Usually the measurement from eye to eye will lengthen and the height measurement will decrease with wear. See picture I have included that will show the measurements you will need to match to replace your leaf springs. The number of leaves in a spring pack does not have to remain the same as long as the weight capacity is inline...
    view full answer...

  • How to Determine Correct Leaf Spring Size on 6 X 12 Utility Trailer
  • When replacing the leaf springs on your 6 x 12 utility trailer you will need to match all of the dimensions and the spring capacity as closely as possible to the original spring. Usually the measurement from eye to eye will lengthen and the height measurement will decrease with wear. See picture I have included that will show the measurements you will need to match to replace your leaf springs. The number of leaves in a spring pack does not have to remain the same as long as the weight...
    view full answer...

  • What are the Proper Components Needed to Install the Leaf springs On a Trailer
  • Building a single axle trailer you will need the following items to install leaf springs. I have listed the part numbers for the PR626 Springs next to the items needed. 2 Springs - # PR626 2 Front Hangers - # 115917, 1-1/2 inch tall or # 28-5, 3-1/4 inches tall 2 Rear Hangers - # 30-20, with 1-1/2 inch or # 93003-3x, with 3-1/4 inch 4 Shackle Straps - # TRSL313 6 Shackle Bolts and Nuts - # 166081 These components are available in the following Kits. Single Axle Trailer Hanger...
    view full answer...

  • Replacement Trailer Double-Eye Leaf Spring 26 Inches Long
  • When taking double-eye spring measurements you will need to make sure the weight is off of the spring you measure. You can do this by either removing the spring or by jacking up the trailer on the side you want to measure. Over time, a spring can also flatten out a bit so that could be why you are seeing different measurements. But we do have a 26 inch long spring measured from the center of one eye to the center of the other eye. It is # PR626 and it has a capacity of 2,250 pounds....
    view full answer...

  • Attaching Shackle Bolts and Spring Hangers to Utility Trailer
  • It makes no difference which direction the shackle nut or bolt head is facing. The bolt is not driven in, when the shackle bolts are tightened, the knurled portion of the bolt will be drawn into place. Make sure you use a lock nut, and snug it down then back it off about 1/4 turn so the shackles will not bind. If you use a wet shackle bolt with a grease zerk, you will want the zerk facing the outboard side of the trailer for easy access. The movement of the suspension will make it almost...
    view full answer...

  • Will the Larger Capacity Leaf Springs # PR4 Fit Tandem Axle Trailer With 3,500 lb Axles
  • If the measurements on your trailer match the 4-Leaf Double-Eye Spring, part # PR4B or part # PR4, they will bolt up to your trailer. My contact at Redline informed me that the heavier 4-Leaf Double-Eye Spring, part # PR4 will work, but it will give you a rougher ride. Also the weakest link on the trailer will be the 3,500 lb axles when using the 4,800 lb leaf springs. It is recommended to use the Leaf Springs For 3,500 lb Axles, part # PR4B for your trailer with 3,500 pound axles. Installing...
    view full answer...

  • Which Leaf Springs for my 5x10 Trailer with a 3,500 Pound Axle
  • There is a lot of variance in how much a spring will stretch. A trailer that carries a lighter load or is not used frequently will not have as much spring stretch. The springs you were looking at, part # PR626, are made for trailers with 4,500 pound axles. It might result in a bit rougher of a ride. The double eye springs we carry for a 3,500 pound axle are 25-1/4 inch long. At six years of age, I can see the springs stretching 3/4 of an inch. We have two springs that would work for...
    view full answer...

  • Is there a Specific Torque Rating for Trailer Suspension Bolts
  • If we are talking about shackle bolts that hold the leaf springs to the hangers then they do not have to be super tight if you use a lock nut. You will be looking at about 65 to 95 foot pounds of torque. That is for 9/16 inch bolts. Here is a short chart for common suspension bolt sizes: 1/2 inch Bolts: 45 ft/lbs - 70 ft/lbs 9/16 inch Bolts: 65 ft/lbs - 95 ft/lbs 5/8 inch Bolts: 100 ft/lbs - 120 ft/lbs This comes from our FAQs on slipper springs and double-eye springs which I have...
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  • Recommendation for Replacing Trailer Leaf Springs on Triple Axle Trailer
  • If you have 6000 pound axles then the Double-Eye Spring, # PR626 will not be heavy enough for your trailer. It is only rated at 2,250 lbs. When replacing springs on an axle you divide the axle carrying capacity in half to get the spring capacity. This means that you will need at least 3000 pound springs. When you measure your old springs, they will measure longer than the new spring due to wear. Since you have a broken spring you may want to go with the Double-Eye Spring, # PR6....
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  • 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...

  • Replacement Double Eye Springs and Suspension Kit for a Triple Axle Trailer
  • All of the hanger kits we have for double eye springs are going to be for 1-3/4 inch wide springs because that is what the majority of double eyes are presently. What you can do is replace the springs which would allow you to use the right hanger kit and provide you with all new suspension parts which is the ideal way to go. We carry one 26 inch long spring measured from the center of one eye to the center of the other eye. It is # PR626. Each spring has a capacity of 2,250 pounds. However,...
    view full answer...

  • Replacing Leaf Springs, Hangers, Bolts, and Shackles on Old Utility Trailer
  • Trailers typically do not have shocks. Motor homes perhaps, but not trailers. You are right though there are currently no 40 inch eye to eye leaf springs available. That is a big spring! Shorter springs, provided they are properly installed and have the correct capacity should not change much at all about how the trailer rides. You will notice a difference of course because the new springs will not be as worn out as the old springs. So it would likely feel stiffer which also makes the...
    view full answer...

  • Recommended U-Bolts for Weekend Warrior LE-3305 Axle Flip Project
  • To convert your axle for a top mounted leaf spring I would recommend replacing the U bolts, nuts and tie plates, so your best bet would be to go with a U bolt kit. For a 2-3/8" round axle use # APUBR-1 For a 3" round axle use # APUBR-9 You don't want to actually turn the axle over, because it would have your wheel camber going the wrong way.
    view full answer...

  • 4,500 lb Leaf Spring Recommendations for a Dual Axle Trailer
  • Generally speaking, the heavier the spring rate the rougher the ride will be when unloaded. That is the sacrifice that gets made when you go to a spring that will allow you to have a higher towing capacity. If you are concerned about ride quality and are positive that the trailer will never see more than 9,000 lbs then leaf springs # PR626 would be a good choice for you. Regardless of the springs you choose, you will be limited by the lowest rated component of your trailer. So if...
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  • How to Fix Shackle Straps that Hang from the Equalizer to Spring and are Pointed Down
  • What you can do is jack up the trailer and then use a long metal bar or piece of wood and pry the spring back up into position. Some times you may also need to jack up under the axle and that might help to pop it back into place. This can happen with no weight on the trailer and if weight is pulling down on it. For example if the trailer was jacked up and the axle was pulling down it can pop it out of position.
    view full answer...

  • Spring Hanger Position for Tandem Axle Trailer with 6000 lb Axles
  • To determine the location for the axles 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. For example, if the trailers frames length is 18 feet, then the center-line location for the equalizer...
    view full answer...

  • Replacing Leaf Spring Recommendation for a 2004 Weekend Warrior Super Lite FK 2100
  • Since you have dual axles you will split the overall capacity of your trailer between the two axles. So you would not want a double eye leaf spring set for 8,000 lbs even if we made one because that would be way overkill for your setup. The closest spring sets that we offer would be the 4-Leaf Double-Eye Spring # PR4. This spring has an axle capacity of 4,800 lbs, so when you double that because of your dual axle setup you end up with a capacity of 9,600 lbs which is more than the 8,000...
    view full answer...

  • Axle, Hubs and Suspension Needed for Rebuilding Old Lightweight Magic Tilt Boat Trailer
  • We offer a limited selection of off-the-shelf axle assemblies. We offer a 2000 lb axle, part # 20440I-ST-60 that sounds like it might work for you. The hub face to hub face dimension is 60 inches, and the spring seat to spring seat dimension is 48 inches. The axle includes two idler hubs with a 4 lug on 4 inch bolt circle, that include bearings, races, grease seals, grease caps and lug nuts. We'll even toss in a can of grease for you. For springs, your idea for going with lower rated...
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  • Should Trailer Leaf Spring Hangers be the Same or Different Heights for a Level Spring
  • You do need to level out the spring by using a different hanger. Often times there are differences in height between the front a rear hangers. One will be longer than the other. Usually on the longer one the spring will attach directly to the hanger. The shorter one then would get a shackle strap to even it all out. This is done so the suspension is more free to move. I have included a picture of what this would look like. I have also included a link to our help article on double...
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  • Torque Rating For Shackle Bolts and Which Way Should a Lock Nut Go On a Bolt
  • For the 9/16 inch diameter bolts a torque rating of 65 to 95 foot pounds is right where you want to be. Lock nuts will only thread on properly one way so it is fairly easy to determine if you have it on correctly when you start to turn it by hand. On a nut like # TRFA916DLNZ there are markings on it as you can see in the picture. Other lock nuts are wider on the end that goes onto the bolt so it is clear on those as well.
    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.
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  • How to Determine the Correct Replacement Double-Eye Trailer Leaf Springs
  • You will need to measure the springs currently on the trailer to get the correct ones. You will also need to know the axle capacity which should be listed on a sticker or plate on the trailer frame or tongue. To measure you will first need to take the weight off of the side you are going to measure by jacking up the trailer on that side. Then you will take the measurements indicated in the picture I have included. Based on the measurements and the capacity needed I can determine if...
    view full answer...

  • Tandem Axle Hanger Kit # APT9 Recommendation for a Homemade Trailer
  • The suspension kit that would be the closest to what you have on your trailer would definitely be the Tandem-Axle Trailer Hanger Kit # APT9. The minor dimensional differences would not cause an issue. Since the equalizers would be 3/4 of an inch longer I would recommend you compensate for that with hanger spacing. The distance on center between the spring hanger bolt holes for dual axle setups, with the # APT9 Tandem-Axle Trailer Hanger Kit, should be 29-1/2 inches for double eye...
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  • Finding Correct Location For Leaf Spring Hangers On Trailer
  • Since hangers need to be welded to the frame, it is important you have the correct location marked on the frame before welding them in place. This is not a really simple task if you are building the trailer from scratch. if you are just replacing your hangers and you are using the same axle and springs, then you would attach the springs to the axle, attach the hangers to the springs and locate the mounting position that way. If you are installing new axles and hangers and springs there...
    view full answer...

  • Replacement Leaf Springs for a 1962 Shasta Astrodome Trailer
  • To find the correct replacement springs for your trailer, if available, you will need to measure the old springs with no weight on them. You can do this by either removing the old springs or by jacking up one side of the trailer. Then you will need to take the measurements you see in the picture I have included. With those measurements I should be able to determine if we have springs that will fit. The spring capacity is listed per spring. So for example a 3,500 pound gross trailer...
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  • Hanger Location Recommendations for Use with a Leaf Spring # PR3
  • The Trailer Leaf Spring, 2250 lbs. 6 Leaf, item # PR626, is sold as a replacement spring for older trailers and measures 26 inches for eye to eye, center to center. If you are replacing the springs and hangers you will need to use the same center to center dimension as the original mounting brackets. These springs are designed for a 4,500 pound axle. Since you have a distance of 23-1/2 inches from eye to eye and your axles are 3,500 lbs this would not be the spring for you. It sounds...
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  • Replacement Springs for a 2004 Coachman Cascade
  • The eye to eye measurement needs to be taken when there is no load on the springs. The trailer needs to be jacked up so that the wheels are not touching and the springs are bearing no load. If they are measuring 26-1/8 with a load on them and they are nearly flat, I would imagine a 25-1/4 inch spring would be too long. Something like part # PR6 would probably be a more appropriate spring, but please measure the spring when you can get the trailer off the axle. If the springs are almost...
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  • Replacement Leaf Springs for an Older Trailer with 5,200 Pound Axle
  • You are going to want to measure the eye center to eye center on your existing springs to determine replacements. You have to take the measurement with no weight on the spring so you can jack up one side of the trailer and measure that sides spring. Over time, a spring can flatten out a little and the measurement could be slightly different than what a new spring will measure. You are most likely going to find that spring # PR5 or # TE30 is a fit. PR5 is more common but both are popular...
    view full answer...

  • How to Trailer Suspension Hangers Attach to a Trailer
  • Suspension hangers for trailers like the part # 115917 need to be welded on. There are no options for bolt on hangers so your best option would be to have a qualified welder/fabricator move your current ones. The goal should be for axle place that when the trailer is loaded it would have 10-15 percent of the total weight of the trailer as tongue weight.
    view full answer...

Do you have a question about this Trailer Suspension?

Info for this part was:

Expert Research:
Michael L

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Reno H

Expert Research:
Jameson C

Expert Research:
Adam R

Photos by:
Amber A

Updated by:
Rachael H

Expert Research:
Jeffrey L

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