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Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 4,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.
Features:
Specs:
| Part Number | A | B | C | D |
|---|---|---|---|---|
| SP-051275 | 13" | 14" | 26" | 4-1/4" |
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 leaf springs provide the attachment points for your trailer's axle, suspending it from the frame of your trailer. Each spring flexes to absorb road shock as you travel, allowing the axle to move somewhat independently of the rest of your trailer. This helps to reduce wear and tear on the trailer and also ensures a smooth ride.
Double-eye leaf springs attach to hangers that are welded onto your trailer. One end of this spring will attach directly to the hanger with a suspension bolt. The other end will attach to shackle straps that are suspended from a hanger. These straps allow the spring to move and pivot so that it can better compensate for uneven pavement. If you have a tandem- or triple-axle trailer, the shackle straps will be attached to the equalizer that connects multiple springs.
To mount this spring, you will need hangers, shackle straps, and suspension bolts. If you are simply replacing a spring, you may still have hangers welded onto your trailer. You should, however, replace your shackle straps because they are usually the first component to wear out. You may choose to replace old suspension bolts as well. It is recommended that you replace the other leaf spring in your setup at the same time. Because springs can sag and elongate as they wear, this new spring may not exactly match the old one, and the alignment of your trailer could be affected.
If you are fabricating a trailer, you will need to purchase a hanger kit for installation. To determine the type of hanger kit that you need, you must know the specific type of leaf spring that you have, as well as your axle capacity. Depending on the hanger kits used with them, springs can be configured to work for single-, tandem- or triple-axle applications. Hangers and other suspension components can also be purchased separately if there isn't a complete kit that works for your setup.
Average Customer Rating: 4.9 out of 5 stars (207 Customer Reviews)
Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 4,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.Great replacement springs, I ordered brackets also. Cut all bolts with grinder and new ones went in like a charm. Didn't realize how bad the old ones were. Nice and easy upgrade.
I called customer service and worked with William B. He was patient and listened while i described problem and sent pictures to him for review and advice. He took time to search forums and find out specifications of the boat trailer which happened to be quite old. Helped solve a challenging problem and called me back quickly when had some questions about my order. he also sent me an email about the status of the order and let me know when it shipped. I was very impressed with the customer service. I ordered several size options and etrailer was great to work with. The trailer was for a boat MasterCraft Prostar 205 from '90s and wasn't able to measure the springs correctly because it was 3 hours drive away. Thanks for great service.
I order for my 2007 crossroads Cruiser 5th wheel. a set off 4 leaf springs And brakes all around everything fits perfect.
Using etrailer.com has been a great experience. They have a huge selection of trailer parts and make it very easy to find the right parts. The packaging seems to have gotten alot better. Very sturdy box. It arrived within a few days from ordering which was a huge plus. I was able to get the job done sooner than planned. That kind of experience will keep me loyal to etrailer for any future trailer parts needs. Thanks guys and gals. Keep up the great work. As far as the parts, eveything was heavier duty than factory. Since I measured the old parts I was able to find the exact replacements for those parts. The job went so smoothly without any issues. These springs raised the trailer height without any load on the axles 1.5 inches. It was definitely time for new springs and hardware. Im kind of glad the one spring broke.
I replaced 3500lb axle springs with these 4000lb axle springs. Super easy. Good fits all the way around. Also suspension upgrade from Moryde, new Goodyear endurance on steel. Correct parts every time, faster delivery than anywhere. Too easy. Dont waste your time going anywhere else.
Re did my pontoon trailer and it is nice to know they are good for another 30 years of service.
Replacement springs for my double axel boat trailer. Quality seems top notch, and the trailer rides well. I’d buy these again if I ever need to.
I replaced the nylon bushings with brass bushings, but otherwise just what I needed.
Ted K - 06/12/2020Parts that were purchased were as described. All parts fit and were of proper dimension which is a great thing. Price and quality were in line with expectation.
Paul P - 09/10/2020Great springs, easy install. Very good products and great service as usual, thanks
The spring replacement went well and was easy to complete. It lifted my trailer about 1.5 inches from the top the tire to the fender. It wont rub anymore!!
E=Trailer provides me excellent customer service. I mistakenly ordered the wrong size leaf springs. As soon as I realized my mistake, I called E-Trailer. I should have wrote the lady"s name who helped me. She really deserves recognition. She was so nice, courteous, and helpful. She sent me a U.P.S. label to save me postage. She instructed me what to do and how to return the leaf springs in the original packaging. She assisted me in ordering the correct part, which was received within days. I have already recommended E-Trailer to my neighbor and I am going to make future purchases to complete my project.
I had a broken spring on the road and had it replaced. I considered replacing only the other three. I decided to do all four to keep everything the same. I'm glad I did. I replaced the plastic bushings with the bronze ones and grease-able bolts that came with the pivot kit I bought. There were only pieces of the original bushes left in the old springs. I had not realized how over the years my trailer had sagged. Now it's like new again. NOTE** Make sure to press the bushings in, a bench vice works fine, and do not use a hammer. They are bronze, not steel, and can be ruined. ( Just some sound advice from a 68 year old professional).
They fit perfectly on the trailer.
Replaced my springs on my travel trailer a year ago and did over 10,000 miles and they are holding up well. No rust or squeaking. let's hope these keep on working like this for a lot more.
After purchasing an order of springs, shackle kit, U-bolts, bearing kit and a new Pro jack for a trailer repair I discovered a week delay in shipping due to one of the items on back order. (Email the day after I ordered informing me of the delay) A call to Angie K. On that Sunday!!!! And she had an in stock item to replace it and had my order on its way Monday morning , Thank You Angie everything sent was what I ordered and correct. Communication was great and they did what they said they would, Good prices and free shipping on my orderThanks again
Another great product from etrailer. The springs gave me a few more inches of lift on my trailer and made a lot smoother ride. Great product.
Rebuilt 1990 stratos boat trailer suspension. Now it tows great and rides smooth. Raised the trailer just enough for the slightly bigger new tires.
Worked as stated great upgrade for trai ler
We have order from etrailer before and had no issues with this type of kit. This time a few parts were missing in our axle kit. We contacted Becky on a Saturday and she promised to work with the manufacturer of the kit first thing Monday to resolve the issue, and she did. The parts shipped Monday and we received them the next day!! This allowed us to finish the installation on time for going out of town. Awesome customer service!! Thank you and God bless
These springs are much stronger than what I first ordered, thank you for sending my return tag, I measured wrong the first time. These springs with an inch shorter in length & an inch more arch work perfect & give the tires more room. Thanks again for the great service from all of your operators. I must say, even with shipping the experience & service was well worth it.
Jerry k - 05/02/2018As usual, the order was shipped and received quickly. Parts were the quality I expected and no issues on fit. Email communication was very good. Never had any issues on numerous orders in the past.
I'm very happy with this product. Excellent quality and the product description was very accurate.
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