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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Fixed Ball Mount
  4. Fits 2-1/2 Inch Hitch
  5. Drop - 4 Inch
  6. Rise - 0 Inch
Curt Heavy Duty Forged Ball Mount for 2-1/2" Hitch - 2-5/16" Ball - 4" Drop - 20K
CURT

Curt Heavy Duty Forged Ball Mount for 2-1/2" Hitch - 2-5/16" Ball - 4" Drop - 20K

Part Number: C43JR
In Stock
$130.52
Retail:$179.95
You Save: $49.43
Trailer Hitch Ball Mount
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Towing starter kit includes forged ball mount; 2-5/16" diameter, chrome-plated, and pre-torqued hitch ball. Slides into 2-1/2" square trailer hitches. Great Prices for the best trailer hitch ball mount from CURT. Curt Heavy Duty Forged Ball Mount for 2-1/2" Hitch - 2-5/16" Ball - 4" Drop - 20K part number C43JR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (893)
  • Q & A (0)
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CURT Trailer Hitch Ball Mount - C43JR

Highlights

  • 20,000 lbs GTW for Heavy Trailers: Handles large campers, boats, and double-axle utility trailers.
  • 4" Drop for Level Towing: Helps match trailer height for stable, even towing setups.
  • 1-Piece Forged Steel Strength: Solid construction adds durability for long-term hauling use.
  • Pre-Torqued 2-5/16" Ball Included: Ready to tow right out of the box—no assembly or torque work.
  • Corrosion-Resistant Finishes: Carbide black powder coat and chrome plating help block rust and chips.
  • Simple Receiver Fitment: Slides into 2-1/2" x 2-1/2" hitch receiver; pin and clip sold separately.
Made in USA

Features to know about

Built to Handle Heavy Loads: 20,000 lbs GTW Capacity

When you're towing a big boat, camper, or heavy utility trailer, you need gear that won’t flinch under weight. This forged steel ball mount is rated for 20,000 lbs gross towing weight and 2,000 lbs tongue weight, so it’s ready for serious hauls. The solid, 1-piece forged design gives it the kind of strength you can count on when the load gets heavy.

Keeps Your Trailer Level: 4" Drop for Proper Height Matching

Getting the right height between your hitch and coupler keeps your trailer from leaning or swaying. This mount offers a 4" drop and a 0" rise, letting you fine-tune your setup so the trailer stays level and tracks straight. Once installed in a 2-1/2" receiver, it gives a clean connection point for smooth towing.

Ready to Tow Right Out of the Box: Pre-Torqued 2-5/16" Ball

No need to hunt for tools or torque specs before your first trip. The included 2-5/16" chrome-plated hitch ball comes factory-torqued and ready to go. It’s built for most heavy-duty trailers like double-axle utilities, deluxe campers, or livestock haulers. Slide it into place, add your preferred pin or lock, and you’re set to tow.

Built to Last: Corrosion-Resistant Finishes That Hold Up

Towing gear takes plenty of abuse from rain, salt, and road debris. This mount’s carbide black powder coat finish protects the shank from rust and chipping, while the chrome on the hitch ball keeps its shine after miles of use. The durable finishes help your setup stay dependable through all kinds of weather.

Simple and Solid: Fixed Ball Mount That Stays Steady

Sometimes reliability comes from keeping things straightforward. This fixed ball mount has no moving parts to loosen or rattle over time. The solid forged steel build fits firmly in the receiver and stays quiet mile after mile, making it a no-fuss solution every time you tow.

Specs

Application

  • Application: 2-1/2" x 2-1/2" trailer hitch receiver

Weight and Capacity

  • Gross towing weight: 20,000 lbs
  • Tongue weight: 2,000 lbs

Dimensions

  • Length: 8-3/4" from center of hitch pin hole to center of ball
  • Drop: 4" from top of inside of hitch opening

Diagram showing how to measure the drop on a standard Curt forged ball mount with a 2-5/16-inch chrome hitch ball.

Ball Size

  • Ball size: 2-5/16"

Warranty

  • Warranty: Limited lifetime for ball mount, 1-Year limited for ball

45372 Curt Loaded Ball Mount - Quick-Loading 2-1/2" Square, Forged Ball Mount with 2-5/16" Chrome Hitch Ball - 4" Drop





Customer Satisfaction Score:

Ratings & Reviews

4.8

892 reviews
Review sort icon
Towing starter kit includes forged ball mount; 2-5/16" diameter, chrome-plated, and pre-torqued hitch ball. Slides into 2-1/2" square trailer hitches.

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by:

Works great.
Thank you.



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Solid design, and works well for what I need!



by:

Heavy duty and will pull anything.



by:

Great product very impressed with the q uality.



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Quick shipping, quality brands.



by:

Quick shipping! Product was better than shown!



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Perfect replacement



by:

Prompt shipping, thanks



by:

Seems really well built and should take all the abuse I plan on throwing at it. And as always with etrailer sipping was super fast.



by:

Does what it says on the label. Not sure what else to say. I'll update this if it ever breaks towing my 14k lb trailer.



by:

Works great for our camper and dump trailer. Super heavy duty!



by:

Very hefty piece of equipment. Fit in my receiver was good. etrailer service and shipping was accurate and fast.



by:

Definitely a quality built piece. I'm glad I went with Etrailer too. The service is great. I will continue to use Etrailer for my trailering supplies.
Thanks



by:

Seems like a quality product. Fits a 2.5in receiver better than using a sleeve and 2in shank



by:

This product would be excellent if they would have made the drop 1/2 inch more It lets me drop my step tailgate down on my 2023 GMC Sierra 3500 but if I put weight on the step it hits the ball



by:

Worked as discussed on website.



by:

Awesome company and so easy to work with. Fast and polite and knew exactly what I need to get.



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Looks really heavy duty



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Perfect, just perfect i tow my 15,000 lbs food trailer around almost every day so i did put some hitch grease on the ball and the wear is basicaly non existant, the fit in my receiver is much tighter than those cheap ones from autozone.



by:

Nice piece



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Solid very well made. Delivery was super fast as well I’m very happy with the purchase.

Douglas profile picture

Douglas

11/8/2025

Still awesome I would buy again



by:

Heavy Duty



by:

Curt products are great. Built like a brick s*** house. I won’t even consider any other brand. I’ve used them for decades and have zero issues with them. Got a new truck that has a 2 1/2 hitch so I had to get a bigger set.


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See what our Experts say about this CURT Trailer Hitch Ball Mount

  • How Pliable is the Mighty Cord RV Power Cord w/ Pull Handle A10-5025ED in Cold Weather?
    Welcome back Wayne! The Mighty Cord RV Power Cord w/ Pull Handle item # A10-5025ED is going to stiffen up and become less pliable as temperatures get closer to -30°. It's rated to be used in all kinds of weather conditions but works really well in cold weather. The Mighty Cord RV Power Cord item # A10-5025ED is a 25' long cord with a female 50 amp locking blade and a male 50-amp 4-prong straight blade. It's got a really convenient handle on the male end that allows you to get your fingers...
    view full answer...
  • What Is The Weight Towing Capacity For The Curt Trailer Hitch # C15810
    The Curt Trailer Hitch # C15810 is confirmed to fit your 2006 Ford F-250 and has a maximum gross trailer weight up to 20,000 pounds and has a maximum tongue weight up to 2,700 pounds. You're only as strong as your weakest component so even the hitch is rated up to 20,000 pounds double check your vehicle's manual to find the proper towing capacity of your vehicle. The trailer hitch has a 2-1/2 inch by 2-1/2 inch opening. You will also need the Curt Forged Ball Mount # C43JR. To deter you...
    view full answer...
  • Ball Mount that Works with Chevy Multipro Tailgate Folded Down
    Based on how tight of clearance there is between the MultiPro tailgate and the rear hitch of the new Chevy trucks I can tell the Curt ball mount part # C43JR would not work with it. Best option is the B and W Tow and Stow part # BWTS20066BMP which was designed to work with the MultiPro tailgate so it for sure will easy work. I attached a picture that shows the clearance it provides. We don't have any fixed ball mounts at this time that were designed to provide the needed clearance.
    view full answer...
    Image 1 for
  • Can Curt Ball Mount with Mounted Hitch Ball be Used in Rise Position
    Hey Fred, yes you could remove the ball of the Curt ball mount part # C43JR, flip the ball mount over, and then reinstall the ball to use it as a rise ball mount instead. For basically the exact same thing but for a 2 inch hitch you would want the Curt ball mount part # C45332.
    view full answer...
  • What 4" Drop Hitch do You Recommend for a 2-1/2" Hitch and a 2-5/16" Ball Coupler?
    Yes! We have the exact 4" drop ball mount you need for your application. For the perfect fit, I recommend the Curt Heavy Duty Forged Ball Mount for 2-1/2" Hitch - 2-5/16" Ball # C43JR. To go along with the mount, if you need a great locking hitch pin to protect the mount from theft, that is the etrailer Hitch Receiver Lock for 2" and 2-1/2" Hitches - Flush - 3-5/8" Span # e98881.
    view full answer...
  • Diameter of Hitch Ball Hole for Curt Ball Mount # C43JR
    The diameter of the ball hole of the Curt ball mount part # C43JR is 1-1/4 inch. We also have this available without a hitch ball with the part # C45458.
    view full answer...

Do you have a question about this Trailer Hitch Ball Mount?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Adam E
Installed by:
Adam E
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Mike S
Written by:
Mike S
Employee Joshua U
Video by:
Joshua U
Employee Daniel M
Test Fit:
Daniel M

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