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Rough pavement, potholes, and washboard roads can shake a trailer apart if the suspension can’t flex. This 4-leaf double-eye spring absorbs shock to keep things level and smooth. With a 2,000-lb spring capacity (for 4,000-lb axles) and sturdy steel construction, it resists bounce and sway so the trailer tracks straight and rides steady mile after mile.
Weak factory springs and worn bushings lead to noise and premature wear. This spring uses tough steel leaves and includes nylon bushings with a 9/16"" inner diameter (11/16"" eye without bushing) for a snug, quiet fit. The setup helps cut down on metal-to-metal contact that causes squeaks, keeping the suspension moving freely and lasting longer.
Getting the right geometry matters for even load distribution and a level ride. This spring measures 26"" from center to center of the eyes and 1-3/4"" wide, matching standard hanger spacing and hardware sizes. Each leaf is 3/8"" thick, giving solid strength while still allowing enough flex to handle bumps without harshness.
Installing a new spring is straightforward with existing hangers, shackle straps, and suspension bolts. It connects to a hanger on one end and a shackle on the other, restoring proper movement in the suspension system. Replacing both sides together keeps the trailer balanced and helps prevent uneven wear so the suspension performs like new.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the 26 inch long Four Leaf Double I Spring for 4,000 pound trailer axles. Now this leaf spring will act as part of your trailer suspension system. Basically, this will provide the attachment points for your trailer's axle. This is for a quantity of one leaf spring. The number of leaves is four, and the spring capacity on this spring is 2000 pounds.
So when this is used with one on the other side of the axle, it'll meet the 4,000 pound axle capacity. Now the multiple leaves allow flexibility to absorb any road shock, allows for a nice smooth ride, and it reduces wear and tear on the trailer. Also ensures a nice level ride on bumpy and uneven surfaces. It is a sturdy steel construction and if you look on the each eye here, it does include the nylon bushings already installed. Now the pre-mounted hangers, or the aftermarket hangar kit, which is required for installation, those items we do sell separately on our website.
Basically the spring will attach to the hangar that's mounted on your trailer frame at one end, and then the other end connects to shackle straps suspended from the hanger or equalizer. A few measurements on this we wanted to mention. The length, which is measured center to center, eye to eye, is 26 inches. And just to put a tape measure on that for you. If we go right across, there's your 26 inch measurement.
The width of the spring is 1 and 3/4 inches, and the eye diameter with the bushings installed is 9/16 of an inch. But that's gonna do it for the review on the 26 inch long Four Leaf Double I Spring for 4,000 pound trailer axles.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
I ordered this spring that said it fit my 2020 Jayco trailer but it was an inch to long. Ordering and delivery time were easy to use and accurate.
Looks good. As advertised.
Impressive quality and build! Can't wait to get the painted and installed!
Only way these could have been better was if someone came and installed them for free
Everything came together like they said it would
its all good but its the wrong size can i return it
Springs flattened and bent backwards on first trip fishing 120 miles round trip
Heather A.
4/10/2026
Thanks for sharing the photo, that definitely doesn’t look right. Leaf springs should not flatten out and bend like that after a single trip, especially with normal use. That usually points to the springs being overloaded or not matched correctly to the trailer’s weight. We’d want to take a closer look at your setup to figure out what’s going on. If you can share your trailer’s axle rating and what kind of load you were carrying, that will help determine if the springs were undersized or if something else is contributing. Really appreciate you bringing this up, we definitely want to make sure you get something that holds up the way it should.
Info for this part was:
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Mike L.
8/11/2026
You sure can! I'll email you return instructions.