Bumpy roads are hard on both your trailer and your gear. This 4-Leaf Slipper Spring flexes to take the sting out of potholes and washboard surfaces, giving your trailer a smoother, more controlled ride. Each of the four leaves works together to absorb shock and reduce bounce, cutting down on wear and tear over time.
When you’re hauling serious weight, you need suspension parts you can trust. This spring supports up to 2,150 lbs per spring for a total axle capacity of 4,300 lbs. The sturdy steel construction gives your trailer a strong foundation that stays level and stable while under load.
Suspension geometry matters, and proper length keeps things aligned. This spring measures 26-1/4"" from the center of the eye to the center of the open end when unloaded, matching original specs so it lines up right with your hangers. A pre-installed nylon bushing with a 9/16"" inner diameter makes installation straightforward and helps the eye end pivot smoothly without metal-on-metal wear.
No complicated hardware here—just a solid design that works. The eye end bolts to the front hanger, while the open slipper end slides into the rear hanger or equalizer, depending on your setup. It’s a straightforward system that keeps your trailer stable and tracks true mile after mile.
A quality spring is an investment in trouble-free towing. Built from tough steel and designed for consistent flex over thousands of miles, this slipper spring keeps your suspension working smoothly and extends the life of your trailer’s running gear.
| Part Number | A | B | C | D | E | F |
|---|---|---|---|---|---|---|
| EM98AJ | 13-1/8"" | 27"" | 26-1/4"" | 13-3/4"" | 14-1/8"" | 3-1/2"" |
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this 4-leaf slipper spring with open eye for your 4,300 pound trailer axle. Now, this slipper leaf spring is going to act as part of your trailer's suspension system by giving you an attachment point for a 4,300 pound axle. This is made from a sturdy steel construction, and it is designed to flex to absorb road shock and give you a smooth ride. It's gonna help reduce wear and tear on your trailer, and it's going to ensure a level ride on bumpy and uneven surfaces. Now, as you might know, slipper leaf springs attach to hangers that are welded onto your trailer.
The eye of the spring will attach to the front hanger with a suspension bolt, and then the slipper end of the spring will slide into the rear hanger. If you have a tandem or triple axle trailer, the slipper end will slide into the equalizer that connects multiple springs. And the shape of the slipper end of a leaf spring may vary slightly due to differences among trailer manufacturers. Because of this, it is important to check your leaf spring slipper end before purchasing a replacement spring. It is also 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. So leaf springs should always be replaced in pairs. And it is a good idea to have them replaced by a professional as well. Now, you probably already noticed, here in the eye is a pre-installed nylon bushing. The eye diameter with the bushing is 9/16 of an inch.
Without the bushing, it's going to be one inch. And again, this is a 4-leaf spring with a leaf thickness of 3/8 of an inch. And the spring itself has a capacity of 2,150 pounds. And again, combined with another spring that's also 2,150 pounds, that's going to give you that 4,300 pound trailer axle rating. Let me see if I can give you some measurements here, might be a little bit tricky.
But I'm going to give you the measurement from the center of the eye to the center of the open end here of the slipper spring. So lining that up as best as I can, looks like we are sitting right at 26 1/4 inches. I know that's kinda hard for you to see, but we do have other measurements listed with a diagram on this product page. So if there's other measurements that you're looking for, you can find them on this product page. And the overall width is 1 3/4 inches. But I think that's gonna wrap up our real quick look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.
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