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CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc

CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc

Item # CE23000
Our Price: $25.76
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Mount your round, 1-3/4" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers. Great Prices for the best trailer suspension parts from CE Smith. CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc part number CE23000 can be ordered online at or call 1-800-940-8924 for expert service.
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CE Smith Trailer Suspension Parts - CE23000

  • U-Bolt Kits
  • Boat Trailer
  • Snowmobile Trailer
  • Round Axle - 1-3/4 Inch
  • 4 Inch Long
  • 2000 lbs
  • 3/8 Inch Diameter
  • CE Smith

Mount your round, 1-3/4" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.


  • Mounting kit attaches trailer axle to leaf springs
  • Galvanized plates and zinc-plated hardware resists rust and corrosion
  • Includes:
    • 4 U-bolts
    • 2 U-bolt plates for 1-3/4" springs
    • (8) 3/8" Hex nuts and washers
  • Spring seats (sold separately) required for mounting axle to leaf spring
  • Made in the USA


  • Application: 1-3/4" diameter axle
    • Typical 2,000-lb axle
  • U-bolt dimensions
    • Inner width: 1-7/8"
    • Length: 4"
    • Diameter: 3/8"

23000 CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc

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Video of CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for CE Smith U-Bolt Kit for Round Trailer Axles Review

Speaker 1: Today, we'll be having a look at the CE Smith line of U-bolt mounting kits for mounting round trailer axles. Here's what our kit comes with. It's everything you need for replacing the U-bolts on a single axle on your trailer. We have 4 new U-bolts, you'll have 2 per side; 2 new plates, 1 per side; 8 new lock washers, you'll be using 4 for each side of the trailer; and 8 new nuts, again 4 for each side of the trailer.You can see how well our U-bolts grip around the contours of our axle. This'll keep the axle firmly attached to our leaf springs, so we don't have to worry about it slipping and sliding.Now because we have the zinc and the galvanized finish on our plate and our hardware, this will better protect them from corrosion from the elements, especially salt spray. It's not an issue if you decide to use them on a boat trailer such as this one.Now many of our customers have had to make a second phone call or send an email to us after they bought a new axle for their trailer because they found, once they tried to remove the old one or put the new one on, that they couldn't get their factory U-bolts off.

They had to cut them off, and now they're searching for a replacement. This kit will be a perfect solution for this problem here.Now many of our customers compared these to the Redline line of U-bolt kits. Now the main difference you're going to see between this one and those is that those do not have the galvanized or the zinc finish on the plates or the hardware, which will cause them to rust out faster.As you can see, we already have our new axle sitting on top of our leaf springs. Now this kit could work for an axle that sits on top or below your leaf springs. It works for both applications.

You don't need to worry if yours resides below, you can still use this kit for that.We'll start by taking our new U-bolts and dropping them over our axle on either side of our leaf spring. Now we'll take our new plate. We want to make sure that this flange right here faces down, this hole here in the center lines up with the alignment pin on our leaf spring, and we'll insert our U-bolts through the holes. Place on our lock washers, and we'll put that on our nuts.Now we can start to tighten our hardware, making sure we tighten them evenly as possible. Now we'll torque our hardware again, making sure we alternate to ensure that we're doing it as evenly as possible.And that completes our look at the CE Smith line of U-bolt kits for mounting round trailer axles..

Customer Satisfaction Score:

Customer Reviews

CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc - CE23000

Average Customer Rating:  4.7 out of 5 stars   (126 Customer Reviews)

Mount your round, 1-3/4" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.


Was a perfect fit for my trailer. The original axle was rated for 1500 lbs, was very hard to find bearings for and took weeks to get. After the other side failed, I decided to upgrade to a 2000 lb axle that had common hubs and bearings. No regrets.


Fit fine,just what I need for my 4x8 trailer repair.


U-bolt kit met all expectations. "Shiny" nuts and lock-washers screaming "offshore" sourcing. I replaced with eight (8) grade eights, probably made off shore as well. This will likely last the life of the trailer.


no frills, no problems, nice and solid. It even survived a broken OEM spring incident on the road. I used it as part of a spring-over-axle conversion on my Aliner.

Anthony H.


we recently replaced with with longer U-bolts - only becasue we upgraded the trailer springs


U bolts to short. Called customer service. They won’t have longer ones till august!


Extremely satisfied with! I Highly recommend this company!! I called to place an order at 7:00pm est and I talked with Roger R who made sure I ordered the correct leaf springs and hardware. I had purchased regular ground shipping but Roger and the entire etrailer crew that handled the order and packaged it up had it out the door and shipped that evening and I received the parts the next day which was over 600 miles away from their facility. I would have to say this was absolutely the best online purchase order experience that I have ever made, and I have made online purchases since online purchases were available. They have a great online catalog but if you call you will get professional and friendly service without question. I will use this company again and I suggest anyone that needs springs or guidance on installing them to give etrailer a call. They will have you the right parts shipped very quickly. I know to be as good as is takes the entire team and it starts with the person that answers the phone and then the person that processes the order and then the most important part when the person who packs it and gets it ready to ship does it to perfection. Thanks to Roger and the team I had my trailer rolling within 35 hours from when I called them.


Worked like I expected them to. Quick shipment. If the u-bolt kits had been made in USA instead of China I would have given 5 stars.


Excellent customer service!


With the help of your how to videos I was able to install product with ease.
The one thing in your ordering process that could use some help is the shipping. When I picked the type of shipping I wanted to use I picked the quickest but once it shipped it was slower then I would have liked


High quality. I made a mistake ordering rounded top rather than square top. My fault not company. Be sure to look at axel shape.


easy purchasing experience , good price , great service and delivery !


fit perfect


Very satisfied with the service and all of Allison's help. I would highly recommend etrailer to everyone. Thanks again for such a great experience. Jeff


Very fast shipping, was completed on the weekend. Thanks


I ordered my axle kit and received it 30 days later, I expected it in a week. The hubs, U-bolt kit, springs and grease were shipping in a box, when I receive it the heavy parts had smashed the grease tube, and was quite the mess in the box. The U-bolt kit I ordered as suggested by etrailer was the wrong kit and the bolts were short (their system did not suggest the right kit for the thicker springs). I see there is a kit I could have ordered with longer bolts. When I went to tighten the lug bolts on the new hub I received, one bolt started to pull through the hub. I reported the grease problem to etrailer, they could not care less, so I thought it would not be worth my time to report the other issues. I guess I will purchase new u-bolts, grease, and perhaps a hub somewhere else.


Nice kit. Tough quality.


Very helpful to make sure what I was ordering is exactly what I needed. Got the parts on time and at a very fair price. I will definitely use etrailer again and also recommend them.
Thanks for you help.


great quality parts, fast hipping and they were also cheaper than other online retailers; they should offer veterans and duty military a discount.


Unfortunately, I had to return the axle and components. The rest of the trailer was bad, too!


U bolt kit and leaf spring kit fit great on the old 1979 snow mobile trailer

Dale B.




U-Bolts were perfect. The springs don't seem to be as heavy as my originals. I bought my tilt trailer from a private owner who made it. The original springs leaves are slightly thicker than the new ones. I am not sure what weight this trailer is rated for. The new springs seem to be perfect in size so I will keep them as spare parts


Excellent replacements for older rusted bolts.


Had a hard time finding leaf spring mounting plate kit that had a 1 7/8" gap in the u-bolts. Ordered these and they fit perfectly and arrived in a timely manner. Shipping was as much as the item, but that is out of etrailer's hands of course. Quite happy with the product.


the u bolts for my leaf springs worked great.

Martin K.


still going strong , they work great


Replaced the springs on the old hunting pop up, worked great and exactly what it needed. U-bolt kit and springs were both delivered super fast. Allowing me to get the trailer overhauled before the weekend!!!!

Show More Reviews

See what our Experts say about this CE Smith Trailer Suspension Parts

  • Will U-Bolt Mounting Kit for 1-3/4 Inch Diameter Axles Fit 2 Inch Diameter Axles
    The U-bolts on a kit like # CE23000 would not fit on a true 2" diameter axle. The inner width is 1-7/8" which would be just enough to fit on a 1-3/4" diameter axle. I recommend measuring your axle again, or measuring the inner width of your old U-bolts. Your typical 2" axle would be a square axle, and more than likely you actually have a 1-3/4" axle. Your round axle is going to have a 1-3/4" or 2-3/8" diameter. If you find that it is actually 2-3/8" you would need the # CE23002 instead.
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  • Recommended Rubber Bushing for 1,800 to 2,200 lb Round Axle
    Unfortunately we don't carry any split bushings that are that size. I assume you are wanting to cushion your axle where it installs at your leaf springs, but that is not recommended. You want to make sure you have a solid connection to your axle and I recommend using U-bolts like the CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles # CE23000 if you don't already have them. The torque required for a fit will not give you cushion but there are other ways to achieve that if...
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  • Which Leaf Springs and Hangers Are Needed For 2000lb Trailer Axle e84YR?
    I would be happy to piece a kit together for you, but there are not any leaf spring kits designed for axles such as the Trailer Axle With Idler Hubs # e84YR you were looking at. You will need the Single-Axle Trailer Hanger Kit # APS4 with 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles # e84SR and U-bolt kit # CE23000 to secure the axles to the leaf springs. The hangers will get welded to the trailer frame around 20" apart from center to center of the mounting holes, and you will...
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  • How to Choose the Best Tires, Wheels and Axle for a Homemade Jet Ski Trailer
    Finding the ideal tires, wheels and axles for your trailer will depend heavily on the overall weight of the trailer. For example, a jet-ski can weigh as little as 400-500 lbs on the light end and around 1,000 lbs on the heavy end. You must also consider the weight of the trailer itself sitting on the axles. Also, keep in mind that if the axle is positioned properly, the tongue of the trailer should hold about 10 percent of the total weight. For example, let's assume that your jet-skis...
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  • Parts Needed For Installing Electric Brakes On a 1-3/4" Diameter 2,000LB Trailer Axle
    We do have all the components you will need to put electric brakes on an axle like the Dexter # 20545I-EZ-72-15 axle you found. You will need the Axle Beam # T20BTR-EZ-7258. You will then need to have 2 of the Mounting Flanges # 4-34 welded on by a trailer shop. These need to be welded on in the correct place and be perfectly flush to the hub so they do not cause premature wear on the brakes. Once the mounting flange is in place you will be able to attach the Electric Trailer Brake Kit...
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  • U-Bolt Kit For a Coleman Destiny Royale Pop Up Camper with 2,200LB 1-3/4" Round Axle
    Depending on your year the Coleman Destiny Royale would have come with a 2,200lb 1-3/4" diameter axle. We have either the U-Bolt Kit # APUBR-10 with 4-1/4" long U-bolts or the CE Smith U-Bolt Kit # CE23000 with 4" long U-bolts.
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  • Availability Of Axle To Replace 71" Hub Face 58" Spring Seat 1-1/2" x 1-1/2" 2,000lb Axle
    I have an option that will work for you, but we don't sell any 1-1/2" x 1-1/2" square axles. We do have the 2,000lb # e37YR which has a hub face measurement of 72" which will push your wheels out 1/2" on each side which isn't a big deal, and has the same 58" spring seat spacing so it'll fit your frame perfectly. This comes with hubs that have the common 5 on 4-1/2" bolt pattern, but it's available with the 4 on 4" bolt pattern also as # e62YR. As this is a 1-3/4" round axle you'll need...
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  • Axle Upgrade For Ironton 5 X 8 Utility Trailer
    You may be able to use the Dexter Trailer Axle with Idler Hubs # 20545I-ST-72-15 on your Ironton 5x8 trailer. This axle has as spring center to spring center measurement of 58" and a hub face to tub face of 72". You will need to have new Spring Seat # TRSS175 welded on to the axle as your current axle is an over slung axle and this axle is designed to be under slung. If that will work on the trailer you will need the CE Smith U-Bolt Kit # CE23000 to mount the axle as the factory axle is...
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  • Determining Which Axle For Custom Tear Camper Weighing Up To 1500lbs
    I would be happy to help! There are a few different options here, with one being a standard axle and one being an axle-less option. For a standard axle I recommend the Dexter Trailer Idler Axle Beam with EZ-Lube Spindles - 72" Long - 2,200 lbs # T20BTR-EZ-7258 which has a 2200lb rating which will give you plenty of capacity for what you are needing, though since your frame is 59-1/2" wide you will need to cut off the included spring seats and weld two of the # TRSS175 in the correct location. You...
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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 Trailer Axle For 5' X 8' Ironton Trailer With 15" Diameter Wheels and Tires
    Based on the Dimensions of the 5'x8' Ironton trailer you are most likely to need the Trailer Axle with Idler Hubs # e37YR. This axle places the hub faces at 72" which is 6 inches wider than the bed size of your utility trailer. The spring center to spring center is 58" and if this does not exactly match your trailer you can weld 2 new Seats # TRSS175 on the axle. We do have the U-Bolt Kit # CE23000 to mount the axle to your leaf springs. This axle includes 5 on 4-1/2" bolt pattern idler...
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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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  • U-Bolt Kit for Smaller Round Axle on Jet Ski Trailer
    It could just be the angle but looking at the picture you attached it appears that you have a 1-3/4 inch diameter axle. This would be consistent too with the smaller 2,000 pound axles that are typically on jet ski trailers like what you have. I do recommend verifying this measurement once more but if this is indeed the case then you can use the CE Smith U-Bolt Kit # CE23000 which features U-Bolts with an inner width of 1-7/8 inches and galvanized plates to resist any rust or corrosion....
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  • Recommended Replacement Axles and Leaf Springs for Boat Trailer with Dual 2,000 lb Axles
    If your axles are 60 inches from hub face to hub face and 48 inches from center of spring to spring, then I recommend the Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # 20545I-ST-60-10 or the 4 bolt hub version # 20440I-ST-60. If you have longer axles with the hub face to hub face measuring 72 inches with spring centers at 58 inches, then you will want # 20440I-ST-72 for 4 bolt hubs. With any of these axles, I recommend the hardware # CE23000. I've...
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  • Recommended 2000lb Axle For Harbor Freight Trailer
    I would be happy to help you find the correct replacement axle for your harbor freight trailer. The CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc # CE23000, 4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long # SP-179275, Kenda KR25 ST145R12 Radial Trailer Tire with 12" Aluminum Wheel - 4 on 4 - Load Range D # AM31208, and Dexter Trailer Axle with Idler Hubs - 4 on 4 Bolt Pattern - 60" Long - 2,000 lbs # 20440I-ST-60 are...
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  • U-Bolt Kits Available For Different Size Axles When Adding New Hangers
    Our U-Bolt kits are available separately due to axles having different sized and most hanger kits can be used with several different size axles. Here is a list of different size kits depending on your axle size. 1-3/4" Round Axle # CE23000 2-3/8" Round Axle # CE23002 3" Round Axle # CE23003 1-1/2" Square # CE23102 2" Square # CE23103
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  • Replacement 2K 26 Leaf Springs for Boat Trailer
    The correct leaf spring to use will be the 4-Leaf Double-Eye Spring part # e77SR which is 26" long but keep in mind leaf springs stretch over time so the correct replacement is usually shorter than the existing. In regards to the u-bolts, the correct kit would be the CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles part # CE23000. Then for the shoulder bolts, you can just use part # 166081.
    view full answer...
  • Is a 2,000LB Axle With Hub Face Measurement of 70.5" a Commonly Found Size?
    This is not a common axle size. The Axle # e32GR is going to be our closest to your current axle. This axle has a 72" hub face with spring center of 58". You may be able to use this axle if you have the clearance for your tires to be moved out 3/4" on each side of your trailer. The current spring seats can be cut off and 2 new Seats # TRSS175 can be welded on at the 59" spring center you have. A U-Bolt Kit # CE23000 will allow you to attach this axle to your current leaf springs.
    view full answer...
  • How to Make Over-Under Conversion Kit for 1-5/8" Diameter Utility Trailer Axle
    Since nobody makes a kit for axles smaller than 2-3/8" diameter you will have to put it together. You also want to double check that axle diameter. More than likely it is the standard 1-3/4" and not 1-5/8". You will need to have a certified welder add a spring seat on top of the axle on either side using # TRSS175. Once this is done, you can use # CE23000 to complete the conversion.
    view full answer...
  • Replacement Components To Upgrade Harbor Freight Folding Trailer
    The Dexter Trailer Idler Axle w/ Idler Hubs - EZ-Lube - 4 on 4 Bolt Pattern - 60" Long - 2,000 lbs # 20440I-EZ-60 will be a great upgrade from the axle that comes on Harbor Freight trailers. The 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8inch Long # e84SR and hanger kit # APS2 will work well as will the u-bolts # CE23000. The Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 4 on 4 - Load Range C # AM30630 is rated for 990 lbs each max capacity, so you will...
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  • Leaf Spring, Hangers, U-Bolt Kit for 2000 Dri Doc Bass Boat Trailer
    For a leaf spring the etrailer spring part # e66SR would work great. This is a 2,500 lb axle leaf spring. Then for a hanger kit the # APS2 would be what you would want. It comes with hangers, shackles, bolts, etc. I don't know what axle diameter you have though so picking out a u-bolt kit would be a little more challenging. Most likely it is a 1-3/4 inch diameter axle though and would require the kit part # CE23000.
    view full answer...
  • Replacement Axle U-bolts for Jet Ski Trailer
    The CE Smith U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4" Long U-Bolts - Zinc # CE23000 is the closest kit we have. It is made for 1-3/4 inch round axles which is likely what yours is considered, and has zinc plated hardware for corrosion resistance paired with a galvanized plate. We do not have a completely galvanized option in that size. CE Smith is the boat trailer brand, so it will work excellent for your jet ski trailer. I've attached a couple videos to assist.
    view full answer...
  • Replacement U-Bolt Kit for Mounting Axle on FLOE Pro 100 Snowmobile Trailer
    I'm assuming you mean a U-bolt kit to mount your axle to the leaf springs on your FLOE Pro 100 snowmobile trailer. The correct kit will depend on your capacity/axle diameter. If you have a 2k axle that uses hubs like the # 34822545BX you were looking at then you would need the CE Smith U-Bolt Kit # CE23000. This fits your standard 2k axle with a 1-3/4" diameter. If you have a 3,500 lb axle with a 2-3/8" diameter you would need the # CE23002. If you have a different axle diameter, or...
    view full answer...
  • Axle Over-Under Flip Kit To Allow For Larger Wheels And Tires on Utility Trailer
    The Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00 will fit axles that are 2-3/8" in diameter while the # K71-385-00 is for 3" axles. If you have the smaller 1-3/4" axle you can have a new Spring Seat # TRSS175 welded onto your axle to allow you to mount your axle below the leaf springs. A CE Smith U-Bolt Kit # CE23000 can replace your U-bolts for the 1-3/4" axle. If you need help selecting new wheels and tires please let me know the current tire size and wheel lug pattern.
    view full answer...

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