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When the suspension starts to sag or bounce under weight, it’s time for a stronger spring. This 7-Leaf Slipper Spring with a radius end is designed for 15,000-lb trailer axles, giving each spring a 7,500-lb capacity. Its seven stacked leaves flex to absorb road shock and keep the ride steady over rough pavement or gravel. The design helps reduce stress on the frame and other suspension parts so your trailer tracks level and stable mile after mile.
Heavy-duty trailers need suspension parts that can take real punishment. This spring is built from strong steel, measuring 3" wide with 3/8" thick leaves. The solid build prevents premature fatigue and keeps your suspension geometry consistent over time. It’s made to handle long hauls and rough conditions without bending or cracking under load.
Getting the right fit matters for proper suspension travel. This spring measures 30-1/2" from the center of the eye to the end of the slipper, matching most standard heavy-duty hanger setups. The front eye comes pre-fitted with a rubber bushing that has a 1" inner diameter for a snug mount on your hanger bolt. The radius-end slipper tail slides smoothly into the rear hanger or equalizer, keeping movement controlled and quiet through bumps and turns.
Rough roads can cause harsh jolts that wear out tires, frames, and cargo mounts. The multi-leaf design flexes under load, softening those impacts before they reach the rest of your trailer. That flexibility adds a smooth, cushioned ride while also cutting down on squeaks and vibration. It’s a simple way to get back the comfort and control that worn springs can’t deliver anymore.
Swapping out worn springs doesn’t have to be complicated. The eye end bolts to your existing front hanger, while the slipper end slides into the rear hanger or equalizer. A hanger kit or replacement bolts may be required depending on your setup, but everything lines up cleanly once installed. For best results and proper axle alignment, replace both springs at the same time so your suspension stays balanced and true.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're gonna take a look at the 7 leaf slipper spring for the 15,000 pound trailer axles. Now, this spring is a strong, durable steel construction. It is designed to flex to absorb road shock, provide a nice smooth ride. Also reduces wear and tear on your trailer. Helps to enjoy a nice, level ride on bumpy and uneven surfaces, and it does mount to your trailer frame with hangers, or a hanger kit, which we do sell separately on our website. Lots of times, it is included as a related product on this product page. If you notice on the eye portion right here, it does include the rubber bushing.
A few specs on this: the spring capacity itself is 7,500 pounds, and when this is paired with 1 on the other side of the axle, it'll reach your axle capacity of 15,000 pounds. If you notice the number of leafs on this is 7. 1, 2, 3, 4, 5, 6, 7. I do want to give you some measurements. We're gonna start with the spring length.
The spring length is from the center of the eye to the end of the spring itself. So if we go from the center to the end, it's 30 and a half inches. The width on the spring is right at 3 inches wide. The eye diameter in the eye right here, the inside diameter is 1 inch. This part is for a quantity of 1 spring. Now, 1 last note on this, is to ensure proper axle alignment and suspension performance, leaf springs should always be replaced in pairs.
That should do it for the review on the 7 leaf slipper spring for 15,000 pound trailer axles.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
good service and quick delivery
Purchased this in pair for my new to me kayak trailer and they are awesome. The ones that came with my trailer were rusted bad and two leafs only. These are three leafs giving it more load capacity and way cheaper then any of my local big box stores and trailer parts store here in Miami FL. If you need a pair for your trailer do not hesitate and contact etrailer their awesome website and outstanding customer service will get you what you need trust me this is my second time purchasing with them and they have earn my two small trailer business. Oh and if you are not sure about what you need just contact them. Mr. Jameson C helped me, he send me all the details and links of what I needed with details that's CUSTOMER SERVICE thank you guys God bless....
Replaced rusty springs on a 14' skiff trailer. Fit perfect, DIY for cheap in the driveway, it would've been easier with an impact wrench. Take their advice, etrailer is the best for a reason, get ALL NEW HARDWARE TOO!! I broke several fasteners removing them, if the springs are bad, so is the hardware. I have done three hitches and a set of leaf springs now with these folks. Their install videos and expert advice made it a breeze to save probably a couple thousand in labor at a shop.
2,000 lb. GVW utility trailer came stock with set of two-leaf springs. No wonder it sagged when loaded to 1,500 to 2,000 lbs.
So I ordered a set of four-leaf springs. The description of the springs was very thorough so I was very sure they were what would work and install easily. When the new springs arrived it only took ten or fifteen minutes per side to easily make the switch to the new four-leaf springs. By cleaning all surfaces and going to all steel shorter lock nuts I was even able to re-use the old U-bolts and other hardware. Haven't used it yet (still repairing lights) but I'm sure there'll be a noticeable difference for the better! Thanks e-trailer!
The Reline trailer suspension fit perfect on my small sailboat trailer. It was easy to install and installation instructions video was great for a first timer like me to do the job. Great customer service support helped me out when the first suspension was too big for my trailer. I return it and got the right size. I am very satisfied with the product and the price on the suspension.
I have purchased a number of items from etrailer.com such ans leaf springs, axle and hub assembly, and other items as well, I recently finished the trailer and it is now on a cross country trip. The trailer has just finished a 3,000 mile leg of this trip and I am told it was so smooth that it could not be felt by the towing vehicle.
Every product I have ordered from etrailer.com has been top quality and has worked extremely well. I would come back again for any of my future trailer needs.
Great products great prices super fast service I orderd my stuff late in the afternoon an before I went to bed I got a shipped email and I had my parts in just a few days also check out their low price guarantee so far I like etrailer good job guys
I was assisted by Nick and Katie of etrailer. Both were knowledgeable and helped me spec exactly what I needed. Slip springs and accessories for a trailer that is no longer made. Great attitudes and genuinely friendly to boot. The two of them are exactly what we all hope to get when we need factory help on the phone. This is my third order from etrailer. nuff said!
Lost in shipping, ship dates where not correct. Order a product paid for only got half the order and no ore in stock. Wait a month to gwt more. Told customer parts be in, in a few days, now it is a week. Prob done with etrailer
shippment was on time thanksgot the order right .
I've ordered a few things from here had great luck
Good product.. good fit.. I have used in the past
Good
Great product. Thank you.
Springs fit perfectly putting the other one in now, i have no doubt that this one will work perfect.
Fit good and was easy to order and shipped quickly
Great prices and wonderful customer service, thank you!
It was delivered so on time
Packing was really good
Thank you etrailer
Exactly what I ordered. Extra quick shipping and also the best price I found. Very satisfied
Yes yall took care of the shipping company's blunder and resent the lost in transit parts thanks. Even boxes were stronger and yall put in individuL boxes, the boxes stayed fully intact and parts were secure. Good job
Great products and fast shipping great staff I recommend etrailer to everyone keep up the good work!!!
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Don
1/19/2023
It has been working very well and having no issues