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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: $51.13
Trailer Leaf Spring Suspension
Orders above $99 qualify for Free Shipping
Shipping Weight: 3 lbs
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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 leaf spring suspension 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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  • Reviews (75)
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  • Videos (2)
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CE Smith Trailer Leaf Spring Suspension - CE23000

  • Boat Trailer
  • Snow Trailer
  • U-Bolt Kits
  • 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:  4.6 out of 5 stars   (75 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.


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.


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


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.

we recently replaced with with longer U-bolts - only becasue we upgraded the trailer springs
Anthony H - 03/03/2021


Worked perfectly on my boat trailer, and super easy to install


For being a Chinese trailer , only a little modification was required , very quality equipment


The product was just as described and it worked great for my boat trailer


The items received are exactly what was needed. Salesman at etrailer did it right and shipped very quick.


Everything was a perfect fit and worked out great!


Exact fit and are hefty! Thank you etr ailer.


Checked at Lowes and TSC, two locations and they did not have U bolts,were out of stock. Then on line found kits that was what I needed very cheap which made we go back to etrailer where I discovered they carried different grades. I bought the branded product and am satisfied.


the u bolts for my leaf springs worked great.

still going strong , they work great
martin k - 06/07/2021


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

Dale B - 03/31/2019


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.


great product


Absolute perfect fit and speedy deliver y.


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


many sets were purchased. They were owned for less than 30 days. The trailers that came in for service work or trade ins had the u bolts and plates very faded with no rust.


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!!!!


Replaced broken springs on a utility trailer and these ubolts were perfect.


Haven't installed the parts yet. However, everything came packed perfectly and professionally. Parts look to be of great quality and shipping was WAY faster than estimated! Will definitely continue to keep buying trailer parts from etrailer!


Awesome website, has the trailer parts you need. The best part is the extremely fast service & shipping!


I just wanted to take the time to say thank you . Your Product is outstanding . I am a GM technician for 33 years , my daughter and I , she is 12 years old , Add a project on Old trailer so she could put quad sport to go ridding. Again thank you so much!!


The springs and accessories that I bought are performing great. I'm very happy with the products and services.


I have purchased from etrailer several times and as always never disappointed! Great selection, price, and shipping. Made my purchase during the virus pandemic and order was received within without a problem as if nothing was going on!


Pieces of junk. I broke two of these while tightening with a wrench by hand.

Redline offers a mounting kit thats more substantial, part # APUBR-10
U-Bolt Kit for Mounting 2,000-lb, Round Trailer Axles - 4-1/4" Long U-Bolts
-- Etrailer Expert Mike L - 04/12/2019

Show More Reviews

See what our Experts say about this CE Smith Trailer Leaf Spring Suspension

  • 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...
  • 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.
    view full answer...
  • 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....
    view full answer...
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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.
    view full answer...
  • 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...
    view full answer...
  • 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...
  • 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 # SP-169275 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...
    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 # SP-169275 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...
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  • 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...
  • 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...
    view full answer...
    Image 1 for
  • 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...
    view full answer...
    Image 1 for
  • 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...
    view full answer...
  • 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...
    view full answer...
    Image 1 for
  • Recommended Parts for Rebuild/Upgrade of Harbor Freight Trailer
    The Dexter Trailer Idler Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs # 20545I-EZ-60-15 is a great starting point to upgrade your trailer. This will give you a standard size axle with good bearings, hubs, and EZ-lube spindles. This is far nicer than the weird sized stuff that comes on Harbor Freight trailers. The Karrier ST175/80R13 Radial Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D # AM31994 will be a great addition to these hubs and...
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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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