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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Fixed Ball Mount
  4. Fits 2-1/2 Inch Hitch
  5. Drop - 0 Inch
  6. Rise - 0 Inch
Curt Multi-Ball Mount for 2-1/2" Hitches - Hollow, Black Powder Coated Shank - Black Balls
CURT

Curt Multi-Ball Mount for 2-1/2" Hitches - Hollow, Black Powder Coated Shank - Black Balls

Part Number: C42KR
In Stock
$73.37
Retail:$77.95
You Save: 6%
Trailer Hitch Ball Mount
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Product Images

In Use/Installed

Customer Photos

Tri-ball ball mount lets you tow up to 5,000 lbs with the 1-7/8" ball; 10,000 lbs with the 2" ball; or 14,000 lbs with the 2-5/16" ball. Hollow steel shank is strong and lightweight. Durable black powder coat finish resists corrosion. Great Prices for the best trailer hitch ball mount from CURT. Curt Multi-Ball Mount for 2-1/2" Hitches - Hollow, Black Powder Coated Shank - Black Balls part number C42KR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (108)
  • Q & A (0)
  • Photos
  • Used (1)

CURT Trailer Hitch Ball Mount - C42KR

Highlights

  • 14,000 lbs GTW for Heavy Loads: Handles large trailers, campers, or boats using the 2-5/16" ball.
  • Three Ball Sizes in One Mount: Tow with 1-7/8", 2", or 2-5/16" couplers without changing hitches.
  • Hollow Steel Shank for Easier Handling: Cuts weight while staying strong and works with anti-rattle kits.
  • Zero Rise or Drop for Level Towing: Keeps trailers even when hitch and coupler heights already match.
  • Durable Black Powder Coat Finish: Resists rust and corrosion from road salt and long-term exposure.
  • Permanent Welded Balls for Security: Prevents loosening or theft and stays ready for any towing job.

Features to know about

Handles a Wide Range of Trailers: Three Ball Sizes in One Mount

Instead of swapping mounts for different trailers, this one does it all. The Curt Multi-Ball Mount for 2-1/2" hitches gives you 1-7/8", 2", and 2-5/16" welded balls, letting you tow up to 5,000 lbs, 10,000 lbs, or 14,000 lbs respectively. To switch sizes, just remove the mount, rotate it, and slide it back into the receiver. It’s a straightforward setup for anyone towing different trailers through the week.

Built Strong but Easy to Handle: Hollow Steel Shank

A solid steel mount can get heavy fast. This one uses a hollow steel shank that keeps weight down without giving up strength. It fits any 2-1/2" x 2-1/2" receiver and pairs well with an anti-rattle kit if you want to keep things extra quiet. It’s a simple way to handle serious towing without wrestling bulky hardware every time you hook up.

Resists Rust and Road Grime: Durable Black Powder Coat Finish

Towing gear lives a rough life out in the elements. The black powder coat finish on this mount shields the steel from rust and corrosion caused by rain, salt, and road grime. That finish keeps it looking clean and lasting longer even after seasons of use.

Stays Secure and Simple: Fixed Design with Permanently Attached Balls

Each ball is welded in place so nothing comes loose or walks off when the truck’s parked. The fixed design means no moving parts, no adjustments to fuss with—just a solid connection every time you hitch up. A hitch lock or pin and clip (sold separately) keeps it locked into your receiver for extra peace of mind.

Built for Reliable Towing: No Rise or Drop Setup

With zero rise or drop, this mount is made for setups that already line up level between truck and trailer. The distance from the center of the hitch pin hole to the center of the 1-7/8" or 2" ball is 8-3/8", and 7-1/4" to the 2-5/16" ball—right in that sweet spot for balanced towing performance when your trailer and hitch heights match up.

Specs

Application

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

1-7/8" Ball Capacity

  • Gross towing weight: 5,000 lbs
  • Maximum tongue weight: 500 lbs

2" Ball Capacity

  • Gross towing weight: 10,000 lbs
  • Maximum tongue weight: 1,000 lbs

2-5/16" Ball Capacity

  • Gross towing weight: 14,000 lbs
  • Maximum tongue weight: 1,400 lbs

Dimensions

  • Distance from center of hitch pin hole to center of 1-7/8" or 2" ball: 8-3/8"
  • Distance from center of hitch pin hole to center of 2-5/16" ball: 7-1/4"

Warranty

  • Limited lifetime warranty

45651 CURT Multiball Ball Mount - Black

Compare to Reese 45325





Customer Satisfaction Score:

Ratings & Reviews

4.8

108 reviews
Review sort icon
Tri-ball ball mount lets you tow up to 5,000 lbs with the 1-7/8" ball; 10,000 lbs with the 2" ball; or 14,000 lbs with the 2-5/16" ball. Hollow steel shank is strong and lightweight. Durable black powder coat finish resists corrosion.

by:

Cool to follow up on your product. The multi-ball works as it should. I bought it since I didn't know if the trailer I would get would be 2" or 2 1/4. I tow a 4,000 # trailer/race car with it.

It's a heavy piece to carry around, but I feel that it will last a good many years. I did make a spacer to cram into the receiver, so the hitch doesn't rattle as much.
Otherwise it's great.
Tim E.



by:

The hitch went on great and have used it for bikes, rental trailer, and utilty trailer for hauling kayaks.
Hitch works great would buy again



by:

Pleased with the parts. Was a little surprised/disappointed that the ball mount didn’t include a hitch pin. Guess that I should have read the description better, just a nuisance having to get one separately. Everything else was great.



by:

Fits perfect. Very nice look. Appears to be very durable.



by:

Works exactly as expected



by:

Fits in my Curt #14301 Hitch just great. With my half ton truck, i really only need the rated capacity of the 2" ball.

Having this just allows me to pull the larger (2 5/16") ball that often seems to get used as a replacement on old boat trailers.



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High quality and works as advertised.



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works great



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Looks like it will hold up.



by:

Order was accurate and it fit as advert ised



by:

My 2 hitches came in good shape, they work like a champ.



by:

Excellent product
Very responsive c
ompany



by:

The hitch worked great so far and I got it in good time!!



by:

The hitch I received fit like a glove. Now I don’t have to carry a lot of different trailer balls with me and also don’t need the receiver sleeve either. Thanks again for getting it here in a hurry.



by:

Everything we needed at a great price.



by:

Very prompt service. Great to do business with. Well constructed product.


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

  • How To Prevent Trailer Theft Beyond Hitch and Coupler Locks
    One easy way to prevent someone from removing the ball would be to use a ball mount that has the ball attached (welded) to the shank. That way you won't have to weld a ball to a shank that isn't meant for that type of modification. Some examples include # C42KR or something adjustable that locks like # DTALBM6600. A Wheel lock such as # RA-25 would also be a good idea. The trailer would not be able to be moved with a wheel lock like this on it. And the ball mount/ball may be enough of...
    view full answer...
  • Hitch Ball Needed to Tow a 2015 Jayco Jay Flight 19RD
    I was able to look up a manual online for your 2015 Jayco Jay Flight 19RD and it said (on page 3-7) that depending on your model your coupler will either need a 2" or a 2-5/16" hitch ball. I recommend using a multi hitch ball like the straight # C42KR or the adjustable # BWTS10049B. Both of these include a 1-7/8", 2", and a 2-5/16" hitch ball which will come in handy for various towing applications. You also need a hitch pin & clip # PC3 or a locking hitch pin like part # 63232 to secure...
    view full answer...
  • Which Trailer Ball Size for 27 Foot Long Travel Trailer
    A trailer of the size you mention would either use a 2 inch or a 2-5/16 inch ball. A 2 inch ball can have a capacity up to 8000 lbs, while the capacity of a 2-5/16 inch ball can range between 6,000 and 30,000 lbs. The 2-5/16 inch ball would be more likely, but I couldn't say for sure without knowing the weight of the trailer. Using a tri-ball mount like the # C42KR you referenced might be your best bet. The required ball size should be stamped into the metal on the trailer coupler.
    view full answer...
  • What Size Hitch Ball Does Coupler of 2011 Forest River Roo 21SS Take
    I did some checking and it looks like your 2011 Forest River Roo 21SS has a coupler on it designed for a 2 inch ball. That said, someone could have replaced the coupler with a different size as that's not uncommon so what you can do is go out and look at the coupler on your trailer and you'll see the size stamped on it. The Reese Tri-Ball part # C42KR that you referenced has these two sizes plus a 1-7/8 inch ball.
    view full answer...
  • How To Determine Ball Mount and Ball Size To Tow 2003 Thor Citation
    The size of the ball that you need to tow your 2003 Thor Citation Travel Trailer is determined by what size coupler is on the trailer. More than likely you will need a 2" or 2-5/16" ball. The required ball size should be stamped onto the coupler. Another thing to take into consideration is the rise or drop that may be needed to tow the travel trailer level with your vehicle. I recommend to use an adjustable ball mount Rapid Hitch Adjustable, Aluminum Ball Mount Kit w/ 2 Greaseless Balls...
    view full answer...
  • Would Curt Tri Ball part # C42KR Work For Towing 7,900 lb Trailer
    The Curt Multi-Ball Mount part # C42KR has more than enough capacity for a 7,900 lb trailer as long as the trailer uses a 2 inch or 2-5/16 inch ball (it will). The capacity for the 2 inch ball is 10k and the capacity for the 2-5/16 inch ball is 14k. This ball mount also has zero rise or drop. For it to be ideal for your setup the height of the hitch from the top of the opening to the ground would need to be the same as from the bottom of the coupler to the ground on the trailer when it's level.
    view full answer...
  • Why Do Ford 2-1/2 inch Hitches Have Fit Issues with Aftermarket Hitch Accessories
    For whatever reason the Ford 2-1/2 inch receiver hitches have round corners that do not allow most aftermarket hitch accessories to work. Since you said your hitch is 100 percent custom I do not believe this will be a problem for you since this issue is isolated to only Ford hitches. The Curt Multi-Ball Mount # C42KR should work well for you, I attached a review for this product for you to check out also.
    view full answer...
  • Availability of Tri-Ball Mount for 2-1/2 inch Hitch that is Steel
    We have the Curt Multi-Ball part # C42KR which is a fit for 2-1/2 inch hitches, has all three hitch ball sizes, and has a 14k capacity when used with the 2-5/16 inch ball. It has a hollow shank but it's still very heavy duty. If they made a solid steel shank in this configuration it would weigh more than anyone would want to deal with.
    view full answer...
  • Weight Distribution Recommendation for 2014 Jayco Eagle 314TSBH
    I looked up your 2014 Jayco Eagle 314TSBH and it has an unloaded tongue weight of 906 lbs so you'd want a higher capacity weight distribution than a 1,000 lb tongue weight setup. Also when it's unloaded the trailer weighs right at 8,000 lbs and can weight up to 10,750 lbs when full loaded so you'd be looking at a tongue weight of most likely around 1,100 lbs or more. Ideally the trailer's tongue weight falls right into the middle of the range of the system. So for that the Reese Steadi...
    view full answer...
  • Why is the Curt Tri-Ball Mount # C42KR Hard to Fit in Factory Ford Hitch
    The issue you are running into is that the Ford 2-1/2 inch hitches have unpredictable radiuses on the corners of the hitch opening. It's only on their 2-1/2 inch hitches, but the corners of the hitch opening on some factory Ford hitches end up so round that square shank accessories don't like to easily fit. The solution is to try and remove the powder coat on the shank of the accessory to allow it to install easier. We thought they had gotten better with their more recent 2-1/2 inch hitches...
    view full answer...


Used Items Available
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Condition: Surface Scratches

Notes: Item has minor cosmetic scratches. Otherwise new and unused.

$56.44
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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 Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Kristina F
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Employee John S
Video by:
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