Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,800-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.
Features:
Specs:
| Part Number | A | B | C | D | E |
|---|---|---|---|---|---|
| SP-038275 | 13-3/4" | 30" | 15" | 17-3/4" | 4-7/8" |
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.
Slipper leaf springs attach to hangers that are welded onto your trailer. The eye of this spring will attach to the front hanger with a suspension bolt. The flat 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. The shape of the slipper end of a leaf spring may vary slightly due to differences among trailer manufacturers. Because of this, it's important to check your leaf spring's slipper end before purchasing a replacement spring.
To mount this spring, you will need hangers, a suspension bolt, and possibly a spring keeper bolt, depending on the design of the rear hanger. If you are simply replacing a spring, you may still have hangers welded onto your trailer, but it would be wise to replace the bolts as they can experience wear. 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.
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: 4.8 out of 5 stars (97 Customer Reviews)
Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,800-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.These leaf springs are amazing! I purchased two springs that replaced the old leaf slipper springs on a single axle toy hauler trailer. The measurement from the eye bolt to the end of the slipper spring was 29 1/4 inches. My old springs measured 32 inches because they were so worn and the 30” leaf slipper springs worked perfect!
The springs fit perfectly and fully met my expectations...see attached photo of my trailer with new parts installed. Great quality, price, lightning fast delivery, and exceptional customer service from order to drop off at my doorstep. Will recommend and order again. Well done, e-trailer, and Thanks.
Great deal! Shipped fast and fit great on an old Dilly trailer for my Hobie Cat. The right side spring was flattened, so replaced em both and the fit was great. Thanks eTrailer!
Good fit with some modification to trai ler
The spring looks great I have not installed it yet but looks great.
Was able to raise my 38yr old trailer to like new height. Website was easy to navigate to find parts.
I ordered the springs on Saturday and got them UPS ground Thursday, amazing service, website and product springs fit like a glove many Thanks!
Worked well. True to advertised dimens ions.
I like that. all dimensions right exactly with product description. Looks very strong. Good quality. I hove it will give my jetski nice and smooth road trips.
good job i wish i bought all of my suspension parts from you
They were easy to install and work well
The left leaf spring on my Dilly 3 rail motorcycle trailer broke. These springs cannot be welded because the steel carbonizes. I ordered 2 replacemeny slipper leaf springs from etrailer. They fit beautfully, just had to slightly increase the diameter of the hole in the axle so that the bolt/nut in the center of the spring would fit. Etrailer has always delived a quality product over the years to me.
This is a good, light duty spring. I replaced a set that were about 30 years old and these springs were exactly the right size. While the original spring was 4 leaves, this one was only two, but much thicker steel. Over all, I think the trailer ride is better than the old spring, but I miss the nylon bushings that were used before. This spring has a steel sleeve for the shackle bolt.
No issues other then being made in china
Brooke M - 05/13/2021Work fine. Had to open the holes on the trailer for 9/16dia. mounting bolts. The trailer is from the 70's, and the 1/2 mounting holes were already wore larger so a 9/16 drill worked easily.
Springs arrived so fast and were the right size .The local trailer store tried to sell me oversize springs and told me I would have to cut 2 inches off each one with a torch.Why go to this moron when everything I need is here and fast!
Just what I needed to fix my snowmobile trailer. Replaced old 4 leaf springs with this one. Everything perfect. From order to delivery I got great communication from etrailer. When shipped, faster ship no extra charge, these guys go above and beyond! Any trailer needs in the future will be bought here. These guys rock!!!!
Needed boat trailer springs and nobody around carried them in 30". Did a search and found etrailer.com had them. Super fast shipping (ordered them on Wednesday and they arrived Friday) ! Perfect fit and got our boat back on the trailer and to the water the next day. I highly recommend etrailer.com.
Perfect! Fixed up my 35 year old trailer's suspension like new.
John B - 06/28/2018Leaf springs for boat trailers come in many configurations, but I was able to find some that work at e-trailer.com.
Super Fast delivery and great product. Local companies said they wouldn’t make them for me cause it wasn’t worth their time. Glad I didn’t have to change my entire suspension set up on my kayak trailer.
cheap spacer but good quality spring
Boat trailer springs and hangers arrived quickly and are of good quality.
easy to install and has worked great!
Fast shipping, excellent quality and ease of ordering make etrailer the place to shop for all your trailer needs. I haven't installed all the items but will do so when the weather turns favorable. All items are exactly as ordered and should present no problems installing them. My only suggestion would be to secure the slipper springs more securely within the large box. In transit movement which must have caused the springs to move, allowed them to mash the smaller box and spilled out some of the smaller items which, luckily, were not lost. I will shop with etrailer again in the future.
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