1. Trailer Leaf Spring Suspension
  2. CE Smith
  3. U-Bolt Kits
  4. Axle Mounting Hardware
  5. Square Axle - 2 Inch
  6. 4-1/2 Inch Long
CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc

CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc

Item # CE23103
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Trailer Leaf Spring Suspension
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Trailer Leaf Spring Suspension CE23103 - 1/2 Inch Diameter - CE Smith
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Mount your square, 2" wide 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. Lowest Prices for the best trailer leaf spring suspension from CE Smith. CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc part number CE23103 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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CE Smith Trailer Leaf Spring Suspension - CE23103

  • U-Bolt Kits
  • Axle Mounting Hardware
  • Square Axle - 2 Inch
  • 4-1/2 Inch Long
  • 3500 lbs
  • 1/2 Inch Diameter
  • CE Smith

Mount your square, 2" wide 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.


Features:

  • 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) 1/2" Hex nuts and washers
  • Made in the USA


Specs:

  • Application: 2" wide, square axle
  • U-bolt dimensions
    • Inner width: 2-1/8"
    • Length: 4-1/2"
    • Diameter: 1/2"


23103 CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc





Video of CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" 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 Trailer Suspension - Leaf Spring Suspension - CE23103 Review

Today we're going to be taking a look at the CE Smith u-bolt kit for mounting 2" square trailer axles. The mounting kit is going to attach a trailer axle to the leaf spring. The plates are going to be galvanized steel, then the hardware is going to be steel construction but that's going to have a zinc plated finish on it, so overall the unit is going to do a great job at resisting rust and corrosion. This kit is going to include 4 u-bolts, 2 u-bolt plates, and then it's going to come with the appropriate hardware, so you're going to get 8 hex nuts and 8 washers, and those are going to be lock washers. We can tell that this is designed for 1 3/4" springs simply by taking a measurement between this hole and this hole, and we can see that- that measurement is right at 1 3/4". Now the plates themselves going this direction we're looking at 3 3/4", and then going this direction it's going to have a measurement of 4". It does have the center hole for punch out on the spring.

Then right here for the u-bolts, a couple measurements I want to go over with these, these are going to give us an inner width, measuring inside edge to inside edge, of just over 2" so that's how we know that there are designed for a 2" wide square axle. Center on center those posts are going to be separated by 2 5/8". The length, measuring from the bottom of this area here to the end of the stud, that's going to give a measurement of right at 4 1/2". Then the diameter of the u-bolts, so the thickness right here outside edge to outside edge, there are going to be a 1/2" diameter. That's going to do it for today's look at the CE Smith u-bolt kit for mounting 2" square trailer axles.


Customer Reviews

CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc - CE23103

Average Customer Rating:  4.9 out of 5 stars   (185 Customer Reviews)

Mount your square, 2" wide 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.

- CE23103
by:

The service is always fast and the price fair and competitive. I have purchased many items in the past from etrailer and have never been dissatisfied. 605084



- CE23103
by:

One year later working as they shoul!! 558284



- CE23103
by:

Great parts, excellent service and fast shipping. This is the only place to get trailer parts as far as I’m concerned! 714470



- CE23103
by:

Wth rusted out leaf springs on my trailer but with zero experience replacing them, I contacted etrailer and Shawn was very helpful in selecting the right parts and taking me through the process. She was patient in terms of helping me take the right measurements and suggesting the bolts and pieces I needed to do the job right. Everything came well packaged and complete two days later. An hour after that the springs were in my trailer and now has a boat sitting on it. Thanks! 418373



- CE23103
by:

Complete waste of time and money. I bought both springs, and this set of u-bolts plates from etrailer for a new 2" square axle. The u-bolts are too short. I'd suggest someone buy a new tape measure. I also had to grind down the spring center bolt as it stuck out of the small adapter plate and kept the spring from seating correctly (used the adapter palte which came with the springs instead of drilling a big hole in my brand new axle.) It is getting harder and harder to get the parts I need from these folks. Now waiting for parts to come from another vendor. 405896



- CE23103
by:

WOW sums up my recent trailer part purchases. The u-bolts fit perfectly and are well made...see attached photo and of my trailer with new parts installed. Outstanding 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. 482086



- CE23103
by:

Perfect fit! Thank you. 641370



- CE23103
by:

u- bolts fit great 488289



- CE23103
by: 10/23/2020

Good quality 904745



- CE23103
by:

Simple online ordering with timely deli very. 901839



- CE23103
by:

Simple online ordering with timely deli very. 901837



- CE23103
by: 09/25/2020

Parts worked great, shipped quick. 892357



- CE23103
by: 09/03/2020

873377



- CE23103
by:

These worked great thanks 867291



- CE23103
by:

Quality u clamps for sure. 865378



- CE23103
by:

Good quality, just what I was looking f or. 865156



- CE23103
by:

860963



- CE23103
by:

It was so grateful to receive all items. I will bring it to Japan to install. I will update a photo after install those. 854918



- CE23103
by:

Used for purpose other than intended, it worked perfectly for what I adapted them for 850546



- CE23103
by:

brackets came in with leaf spring ordered, did a test fit is the same as the older ones that I have which are stainless steel u-bolts. I will keep these as a spare and coat these with a rust inhibitor/ paint. 829310



- CE23103
by:

Was a great service :)))! Thank you. 829866



- CE23103
by:

THE 5 LEAF SPRINGS WERE FINE, BUT THE CLAMPS SENT THAT WERE SUPPOSSED TO FIT THEM DIDN'T. WE HAD TO GO BUY OTHER CLAMPS AND WILL BE RETURNING THESE. 824326



- CE23103
by:

fits and easy to install 823066



- CE23103
by:

Great replacement springs, I ordered brackets also. Cut all bolts with grinder and new ones went in like a charm. Didn't realize how bad the old ones were. Nice and easy upgrade. 830926



- CE23103
by:

Purchased these for a leaf spring replacement project. They were a perfect fit. Also got very fast shipping! 820173


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Ask the Experts about this CE Smith Trailer Leaf Spring Suspension

  • Torque Required for Installation of U-Bolt Kit for Trailer Axles
    These CE Smith U Bolt Kit for 2" Square Axles # CE23103 are 5/8" Grade 8 bolts, which are suggested to be tightened to 170 ft/lbs of torque.
    view full answer...
  • How To Flip Square Trailer Axle For Ground Clearance
    It is possible to mount the springs on top of the axle which is called "flipping the axle". To accomplish this we normally recommend an over-under conversion however there is not one with square u-bolts available for your square axle. Instead I recommend to use CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc part # CE23103 which is galvanized for boat trailers. The U-bolts measure Inner width of 2-1/8" with a length of 4-1/2" and diameter of 1/2"....
    view full answer...
  • Recommended Axle Mounting Hardware for Square Axle
    It sounds like the axles were attached with 2 inch U-bolts that are 1/2 inch diameter which are a standard size so it sounds like the axles are compatible with a standard U-bolt kit like the CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc # CE23103. If this is the case, that is my recommendation. This will work well with 1-3/4 inch wide leaf springs. If I misunderstood and the 2 inch U-bolts were bent out to fit a 2-1/2 inch wide square axle, then...
    view full answer...
  • 2 inch Square Axle U-Bolt Kit Recommendation for a Boat Trailer
    The CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles # CE23103 that you referenced would work well for you as they are designed specifically for 2 inch square trailer axles like what you have. The weight of your trailer and boat would not be an issue at all.
    view full answer...
  • Available Trailer Suspension Square U-bolts Kits
    We carry all sorts of parts for trailer suspensions, including U-bolts for both round and square axles of various dimensions. Our main pages for all trailer suspension parts and for U-bolt kits are linked. We have complete u-bolt/plate kits for 2-inch square axles, part # CE23103 which has an inside width of 2-1/8-inches. Depending on how you measured your u-bolt this may be the kit you need. We also sell u-bolts with hardware on their own, without plates, such as # CE15501A which...
    view full answer...
  • Replacement Slipper Springs for a 2,100 lb Trailer
    The most important factor in picking out a new leaf spring for a trailer is to match the capacity needed. Going with a 3,500 lb spring for a 2,100 lb trailer is going to give you a very harsh ride. For a spring similar to the # WIG4 that is better rated for your trailer we have the # SP-039275 which is for a 3,000 lb axle or part # SP-038275 for a 2,000 lb axle. If you need all 2,100 lbs of your trailer's capacity you would have to go with the # SP-039275. If you have a 2 inch square...
    view full answer...
  • Can Axle Over Under Kit be Installed on Trailer with 2 inch Square Axles
    Axle flip kits are great options for raising the suspension of a trailer. Trucks weren't as tall back then as they are now so I'm not totally surprised your trailer is sitting so nose high. We have 2 inch square U-bolt kits like part # CE23103 which you could use, but we don't have spring seats for this axle size. So you would have to remove the spring seats on your axle and weld them on the other side.
    view full answer...
  • Determining Need to Replace Trailer Suspension Components
    If your shackle links, shackle bolts and hangers are all in good condition - meaning no obvious deterioration, damage or evidence of holes having become egg-shaped from wear - you could re-use them. But in the scheme of things these parts' costs are fairly low so if you're going to the effort of upgrading your camper's suspension I suggest you eliminate any potential doubt/concern by replacing these items if you have any reason to think they're past their working lifespan. If you...
    view full answer...
  • Replacement Leaf Springs for Harbor Freight Folding Trailer
    The best option we have for you is the 3-Leaf Double-Eye Spring part # SP-169275 with the Single-Axle Trailer Hanger Kit part # APS4. This option will replace the leaf springs and leaf spring hanger brackets which is needed because the new double eye leaf springs are 1-3/4" wide and the old slipper springs are 2" wide not to mention the length discrepancy and leaf spring hanger bracket height. The CE Smith U-Bolt Kit for Mounting part # CE23102 or part # CE23103 can then be used to complete...
    view full answer...
  • Replacement Suspension for Tandem Square Axle Venture Boat Trailer
    I reached out to the manufacturer but they are not currently able to look up VIN numbers for part assistance. I was able to find on their website that the square tube axles are either 2000 lbs capacity each or the more common 3,500 lbs capacity each. Most of their trailers utilize the 3,500 lb axles and I believe that is the case for all their tandem axle trailers. For your trailer you can use the following: -Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear...
    view full answer...
  • Availability of 7/16 Nuts to Fit Redline Replacment U-Bolt UBZC716X212X400
    The reason why you couldn't find the matching 7/16"-14 nuts to go with the Replacement U-Bolt for 2" Wide, Square Axles - 7/16" Diameter # UBZC716X212X400 is because we do not carry them. We carry U-Bolt kits that include the matching nuts and washers, like part # CE15251A, which are the same grade (GR 5) and share the same dimensions (4" long x 2-1/8" wide x 7/16" diameter). Or, part # CE23103, which includes the more common 4-1/2" long x 1/2" diameter U-bolts for 2" square axles,...
    view full answer...
  • Can Round Trailer Axle be Replaced with Square Trailer Axle
    Yes, you can replace a trailer's round axle with a square axle as long as the weight capacity is appropriate. You will need a new U-bolt kit to connect the axle: 1-1/2 inch square axles # CE23102 1-3/4 inch square axles # 175130 for the U-Bolts and # 116308 for the plate 2 inch square axles # CE23103
    view full answer...
  • Switching From Slipper Springs to Double-Eye on a Single 2K Axle Trailer with Square Axle
    To switch to double-eye spring suspension I recommend getting parts individually since the u-bolts cannot be swapped out of kits. The spring in the kit is # SP-169275. We have a few different u-bolt kits for square axles including # CE23102 for 1-1/2 inch square axles. For a 1-3/4 inch square axles you can use u-bolt # 175130 and plate # 116308. And for 2 inch square axles we have # CE23103. You will also need a new hanger kit since double-eye springs use different hangers than slipper...
    view full answer...
  • Recommended 30 Inch Slipper Springs and 2 Inch Square Axle Mounting Kit
    For your 2,000 lb square axle, I recommend the 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # SP-039275 which is a little stronger than your axle but won't increase your capacity of 2,000 lbs. This is a 30 inch long slipper spring with a 1.75 inch width as you stated. I recommend using the Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079 with each spring. For your square axle mounting, I recommend the CE Smith U-Bolt Kit for Mounting...
    view full answer...
  • Can Over Under Kit Fit 2 inch Square Axle on Trailer
    We have 2 inch square U-bolt kits like part # CE23103 which you could use, but we don't have spring seats for this axle size. So you would have to remove the spring seats on your axle and weld them on the other side and you'd be have an over-under kit that fits your axle. You might have to drill spring seats in the axle.
    view full answer...
  • Are Trailer Spring Seats Needed for Square Axles with Leaf Springs?
    Square axles normally don't have spring seats like a round axle but do have a hole for the leaf spring bolt to fit into. Take a look at the CE SMITH # CE33201GA-HUB for a visual. The U-bolt mounting kits will have a hole in the center for the other side of that leaf spring bolt to keep everything in line. If you have a 1-1/2 inch square axle use # CE23102. If you have a 2 inch axle use # CE23103.
    view full answer...
  • Hanger Kit Recommendation for Slipper Leaf Spring # SP-264275
    Sounds like what you are in need of is a single axle hanger kit for the leaf spring part # SP-264275 that you mentioned. For that you'd only need the # APS3SE and you'd be set. This gives you the hangers for the front and rear for the spring as well as the correct nut and bolt to hold it all. For a u-bolt kit you'd then want the part # CE23103 for the axles.
    view full answer...
  • Need for Additional U-Bolts to Install CE Smith Roller-Style Guide-Ons CE27610
    The CE Smith Roller-Style Guide-Ons # CE27610 will fit your 2 x 2-inch trailer frame. The standard included brackets work with frame members up to 3-inches wide and 4-1/4-inches tall. It is a good idea to add another u-bolt to each guide-on in your application. I linked our main page for trailer u-bolts where you can see items like CE Smith U-Bolt Kit # CE23103 and # UBZC12X212X525.
    view full answer...
  • Replacement Leaf Spring and Hanger Kit for Boat Trailer that Weighs 3,995 lbs
    The best option is going to be a 4,000 lb leaf spring part # SP-051275 which is a double eye spring that is 26 inches long. For a single axle hanger kit to use with this since you'll need new hangers you'll want the part # APS4. You might be able to use your current u-bolt kit but if you need a u-bolt kit and you have 2 inch square axles you can then also use the part # CE23103. If you have a different size axle let me know.
    view full answer...
  • Recommended Trailer Components Between Frame And 2 Inch Square Axle Of Small Trailer
    For your trailer with GVWR of 780 lbs, the best option we have for your leaf springs is the 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8" Long # SP-169275 you mentioned but they are definitely overkill. To mount your springs to your frame, I recommend the Single-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front, 7/8" Rear # APS1 which will need to be welded in place. To mount your 2 inch square axle, I recommend the CE Smith U-Bolt Kit for Mounting 2" Square...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Cole B
Updated by:
Sarah W
Written by:
Amanda M

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