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  1. Trailer Leaf Springs
  2. Universal Group
  3. Slipper Springs
  4. 24-5/8 Inch Long
  5. 1000 lbs
  6. 2 Leaf
2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long
Universal Group

2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long

Part Number: SP-177275
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$28.02
Trailer Leaf Springs
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Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter. Great Prices for the best trailer leaf springs from Universal Group. 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long part number SP-177275 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Universal Group Trailer Leaf Springs - SP-177275

  • Slipper Springs
  • 24-5/8 Inch Long
  • 1000 lbs
  • 2 Leaf
  • 1-3/4 Inch Wide
  • Universal Group
  • 9/16 Inch Eye
  • Standard Grade
  • Nylon Bushings

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.


Features:

  • Leaf spring acts as part of your trailer's suspension system
    • Provides attachment point for your trailer's axle
  • Multiple leaves allow flexibility to absorb road shock
    • Allows for a smooth ride
    • Reduces wear and tear on trailer
    • Ensures level ride on bumpy and uneven surfaces
  • Sturdy steel construction
  • Nylon bushing included
  • Pre-mounted hangers or aftermarket hanger kit (sold separately) required for installation
    • Eye of spring attaches to hanger mounted on trailer frame
    • Slipper end slides into hanger or equalizer


Specs:

  • Quantity: 1 leaf spring
  • Spring capacity: 500 lbs
  • Axle capacity: 1,000 lbs
  • Length from center of spring eye to end of spring (unloaded): 24-5/8"
  • Spring width: 1-3/4"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 11/16"
  • Leaf thickness: 1/4"
  • Number of leaves: 2
  • Additional dimensions: see table


Radius End Slipper Spring

Part NumberABCDEF
SP-17727511-3/16"22-11/16"24-5/8"12"14-1/2"3-1/2"


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.



UNA-177 Universal Group Slipper Trailer Leaf Spring - 2 Leaf - 500-lb Capacity

Replaces WIC2





Customer Satisfaction Score:

Ratings & Reviews

4.8

629 reviews
Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.

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Show More Reviews

See what our Experts say about this Universal Group Trailer Leaf Springs

  • How to Determine if Slipper Spring SP-177275 Will Fit Trailer
    I can tell you how to determine if the 2-Leaf Slipper Spring for 1,000-lb Trailer Axles # SP-177275 will fit your trailer, though we do not have information regarding fits for individual trailers. The best way to determine if a slipper spring will fit is by measuring the length from the center of the spring eye to the end end of the spring, as you can see in the accompanying diagram. The best way to get an accurate length of a leaf spring is with the trailer up on jacks with the axle...
    view full answer...
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  • Recommended Slipper Spring for Custom Kayak Trailer
    Thanks for the photos with measurements. The 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long # SP-177275 are rated for 500lbs each for use with a 1000K axle. This will work with the inside to inside measurement you are seeking. You will simply need the 9/16 inch bolt # 166079. If there is any extra space in the hanger it won't be an issue with the bolt and bushing.
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  • Parts Needed For Adding 1,000LB Slipper Springs To a Cart With No Suspension
    You will need 2 of the Front # CE14016G and Rear # CE14017G hanger brackets to attach 2 of the 2-Leaf Slipper Springs # SP-177275 to your cart. You will need 2 of the Zinc Shackle Bolts # TRFA73Z916DLNZ to attach the leaf springs to the front hanger. If you can tell what shape and size axle you have I can help you find the U-Bolt Kit you need. We have some like the 1-1/2" Square # CE23102 or 1-3/4" Round # CE23000 depending on the size of your axle.
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  • Replacement Axle And Leaf Springs For A 4' x 6' Single Axle Trailer
    It is possible to replace your 62" long axle with a longer one. Our next size up is going to be a 72" long 2K rated axle like part # e32GR. The axle being 72" across measured from hub-face to hub-face. This axle comes with 5 on 4-1/2" idler hubs, which will allow for a ton of tire/wheel combos. In order to use our axle you would likely need to relocate the spring seats. We sell them individually with part # TRSS175. From the looks of things, you would need a new u-bolt kit # CE23000 as...
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  • Replacing 6-Leaf Springs On A Tandem Axle Trailer With Lower Rated Springs
    A 7,000 lb spring for a 3,000 lb trailer is certainly overkill. I imagine your ride is going to be very stiff with the current setup. For a 26" spring we have the 6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles # e27SR, which will be much more appropriate for the kind of weight you are pulling. If you stick with a 6 leaf spring, it should not effect your ride height or fender clearance. We do also have a 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles # e22YR, but reducing the mount...
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  • Hanger Spacing Dimensions for Installing Slipper Springs on a Boat Trailer
    When determining the hanger spacing for a slipper spring you want to go with the dimensions that the hanger kit calls for. For example if you were using the slipper spring hanger kit part # APS3SE with the # SP-177275 you would want a distance of 22-11/16" inches between the hangers measured on center. This would put the hanger right at the beginning of the curve on the spring.
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  • Replacement Slipper Springs for 1982 Cox Boat Trailer
    Selecting new slipper springs for your 1982 Cox boat trailer's suspension means matching them up to your trailer's axle weight rating and also matching their width and length dimensions. The actual number of leaves does not always matter because different grades of steel can mean fewer or more leaves in a spring for it to reach is rated weight capacity. I think you are on target with the 1800-lbs axle rating for the spring # e29SR you referenced since your 1-1/4-inch diameter axle is not...
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  • Recommended Replacement 22" Long Slipper Springs for Boat Trailer
    I do have an option for you but we don't have any slipper springs in the size you need as they are too short. The best option we can offer you is a new hanger kit with new leaf springs, the Single-Axle Trailer Hanger Kit part # APS3SE is a good option to start with and would pair well with the 2-Leaf Slipper Spring part # SP-177275.
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  • Can a Trailer with Slipper Spring Suspension be Converted to Double-Eye
    Sounds like your trailer has slipper springs and you are wanting to convert it to a double-eye system. This is definitely possible. It would be just a matter of changing springs and hangers. You would need to go with a leaf spring that is rated for the weight of your trailer when it is loaded an ready to go. I attached a page that has all of the double eye springs we offer. At the top is a chart that has all of the springs and their capacities. Select the capacity you need and then on...
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  • Replacement Leaf Springs and U-Bolts For Karavan 1,000LB Single Square Axle Boat Trailer
    The 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles # SP-177275 are going to be the closest to what you have. Depending on the exact location your red string in relation to the end of the radius spring this may account for some of the difference in the measurements. You do appear to have plenty of clearance in your fenders if the springs are not as tall. Be sure to not reuse your current U-bolts as they appear to be for a 2" axle. The CE Smith U-Bolt Kit # CE23102 is specific...
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  • Recommended Leaf Spring Capacity for a Conversion Boat Trailer
    Yes and no, a leaf spring with a lower capacity will provide a better quality ride than a leaf spring with a higher capacity but you will not want to make that part the lowest rated suspension component. Typically, we recommend choosing a leaf spring with a capacity that either meets or exceeds the capacity of the axle. I would be skeptical if the leaf spring pack you have now is only rated at 1,000 lbs. However, since you have converted a boat trailer to a light duty kayak carrier I...
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  • Can Lower Rated Leaf Springs Be Installed on a Trailer to Improve Ride Quality
    You can use a 1,000 lb capacity leaf spring on a 3,500 lb axle without any problems. You should note that your overall capacity would be limited to the lowest rated component of the trailer. Which in your case could be the 1,000 lb leaf springs. So basically you should be able to improve the ride quality of your trailer by going to a 1,000 lb rated spring like the # SP-177275 but you would sacrifice weight capacity. Since your trailer weighs 1,200 lbs you basically wouldn't be able to...
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  • Replacement Hook Style Leaf Spring for Trailer
    Thanks for the photo. The hook end you referenced is a slipper style leaf spring but without knowing the capacity of your axle or the width of the spring is it difficult to give you a replacement recommendation. I've attached the link for the page to all your leaf spring options to assist. The number of leaves doesn't matter but the length, width, and capacity does.
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  • Slipper Spring Recommendation for a Kayak Trailer
    All things being equal there really isnt an advantage to going with one over the other, its just that when you get to the heavier capacities you only see the slipper style. I would recommend either for you, but more importantly you want to pick the spring set that best matches the capacity of what you plan on towing. In that case I would recommend the 2-Leaf Slipper Spring for 1,000-lb Trailer Axles # SP-177275 since it has the closest capacity at 1,000 lbs per axle. Since your trailer...
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  • Do Trailer Slipper Springs Normally Slip Out of their Rear Hangers
    It's hard to see in your picture but is the hanger open on the one side which allows the spring to slide out to the side? It shouldn't be open like that. If you need a replacement hanger we have the # 115706S for if you have a 1-3/4 inch wide spring. Slipper springs slipping out of their hangers is not common, even though saying that out loud and considering the name...it would seem like it would be! It would take a rather larger bump and perfect circumstances normally for a spring to...
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  • Replacing Leaf Springs On Trailer To A Lower Capacity To Avoid Road Shock
    Yes you can replace the leaf springs that came standard on the trailer to soften the ride of the trailer. Just be advised that the total capacity of the trailer will be lowered because you will be limited by the lower rated springs. You can refer to the linked articles for help in selecting appropriate springs for your trailer. Do note that very well-worn springs can become elongated from years of use. If you remove a spring from the trailer and measure it you may find that it has become...
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  • Trailer Leaf Slipper Spring With Smallest Capacity
    I am not 100% sure what you are asking for or the parameters you have in mind other than the weight so the best I can offer is the lightest available leaf spring, which has a 500 lb capacity. - 2-Leaf Slipper Spring # SP-177275 This is a 1-3/4" wide slipper spring that measures 24-5/8" long; if you let me know the size you need I may be able to offer a recommendation. Additionally, I have added a link to a video review for you to check out as well as a couple links to help articles on...
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  • 1975 Dilly Boat Trailer Leaf Springs Replacement Solution
    The closest leaf spring we have is the Slipper part # SP-177275 which is 30 inches overall and is rated for an 1,000 lb axle. This spring could work for you but you'd have to move in your hangers a bit closer most likely.
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  • Replacement for 26.25 Slipper Leaf Spring for 700 lb Trailer
    For a 26-1/4 inch long slipper spring that is 1-3/4 inches wide we have a spring that is going to be way overkill with capacity as the part # e33SR. This has a 4,300 lb capacity. The best option would be the part # SP-177275 with you moving your current hangers most likely as it is 24-5/8 inches long overall and 22-11/16 inches long where it mounts to hangers.
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  • Replacement Slipper Spring To Upgrade Stock Malone Microsport Trailer Leaf Springs
    From what I can find online, it looks like the 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long, # SP-177275 is the best upgrade option for your malone Microsport trailer. This spring is 24-5/8 inches from the center of the eye to the end of the spring. It is 1-3/4 inches wide and has an axle capacity of 1000 lbs. I've attached a video review for you. The only other option for a similar size is the 3-Leaf Slipper Spring w/ Radius End for 1,500-lb Trailer...
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  • Replacement Slipper Springs for 1985 Harding Boat Trailer
    I do have options for you but exact replacements for old boat trailers are hard to come by. In the majority of cases, items will need to be altered for an exact fit which I assume is what is going to need to be done on your trailer as well. We don't have a slipper spring that is 1-3/4" wide x 28" long (center of eye to end of spring) with a 2,500, 3,000, or 3,500 lb capacity. However, leaf springs will fatten out over time which means the leaf spring that was originally installed on the...
    view full answer...
  • Leaf Spring Recommendation for Trailer with Slippers Springs that are 24-7/8 inches
    When picking out leaf springs there are two important things needed. You first need to get a spring that is rated for the weight of your trailer and then get one that is the proper length. Since you sent us a drawing that shows your slipper springs being 24-7/8 inches in length what you would need to do is determine what axle capacity you need. For a 2k axle you would need is the part # SP-179275 or for 1k axle part # SP-177275. Or for 1,500 lb axle you would need part # SP-178275.
    view full answer...
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  • Square U-Bolt Kit for Mounting Leaf Springs SP-177275 to 1-1/2 Inch Square Axle
    You have done your homework because you are on the money with the correct U-bolt kit to mount the 2-Leaf Slipper Spring w/ Radius End for 1,000 lb Trailer Axles - 24-5/8" Long # SP-177275. The kit you mentioned, the CE Smith U-Bolt Kit for Mounting 1-1/2" Square Trailer Axles # CE23102 will work wonderfully for this application so you're all set. I have added links below to video reviews of both products as well if you'd like to check them out.
    view full answer...
  • 1000 lb Capacity Slipper Springs For 400 lb Sailboat Trailer To Ease Rigid Ride
    The 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long, # SP-177275 will most likely work well on your trailer and will ease the beating on your 400 lb sailboat. The 3/8 inch difference in length from your current springs shouldn't be an issue based on the curve, so I don't forsee an issue. However, if you find out it does bind and cause issues, you would need to move the mount. Since you will be lowering the capacity of your trailer, make sure your boat...
    view full answer...


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