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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Adjustable Ball Mount
  4. Fits 2 Inch Hitch
  5. Drop - 5 Inch
  6. Rise - 4 Inch
Curt Adjustable 2-Ball Mount - 2" Hitch - 5-1/2" Drop, 4-1/2" Rise - 15K
CURT

Curt Adjustable 2-Ball Mount - 2" Hitch - 5-1/2" Drop, 4-1/2" Rise - 15K

Part Number: C99NR
In Stock
$259.95
Retail:$342.95
You Save: $83.00
Trailer Hitch Ball Mount
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This steel, adjustable ball mount lets you tow up to 10,000 lbs with the 2" ball or 15,000 lbs with the 2-5/16" ball. Can be used in 5-1/2" drop or 4-1/2" rise positions. Fits 2" x 2" hitch receivers. Great Prices for the best trailer hitch ball mount from CURT. Curt Adjustable 2-Ball Mount - 2" Hitch - 5-1/2" Drop, 4-1/2" Rise - 15K part number C99NR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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CURT Trailer Hitch Ball Mount - C99NR

Highlights

  • 15,000 lbs GTW for Heavy Loads: Handles large campers, boats, or equipment trailers with strength.
  • 5-1/2" Drop or 4-1/2" Rise for Level Towing: Adjusts trailer height precisely for stable, even hauling.
  • Two Ball Sizes in One Mount: 2" (10,000 lbs) and 2-5/16" (15,000 lbs) fit different coupler types without swapping hitches.
  • Anti-Rattle Shank for Quieter Rides: Built-in design cuts down hitch noise and movement on rough roads.
  • Heavy-Duty Steel Construction: Matte black powder coat and chrome balls stand up to corrosion and long use.
  • Quick Height Changes with Pin System: Slide and lock positions in 1-1/4" steps for fast trailer setup.

Features to know about

Keeps Your Trailers Level: 5-1/2" Drop or 4-1/2" Rise

When you’re swapping between trailers, getting the coupler height right makes all the difference. This adjustable ball mount lets you dial in a 5-1/2" drop or 4-1/2" rise so everything stays level and stable. The shank slides easily in your 2" x 2" hitch receiver, and you can fine-tune the setup in 1-1/4" increments using the included pins and clips for precise height matching every time.

Handles Heavy Loads with Confidence: Up to 15,000 lbs GTW

If you’re pulling serious weight, this mount is built to take it. The 2" ball handles up to 10,000 lbs gross towing weight and 1,000 lbs tongue weight, while the 2-5/16" ball steps it up to 15,000 lbs GTW and 1,500 lbs tongue weight. The heavy-duty steel construction gives you a solid feel under load so you can tow larger campers, boats, or equipment trailers without second-guessing your setup.

Simplifies Trailer Changes: Dual Ball System Ready for Anything

Switching between trailers is quick with the dual-ball design. You get both a 2" and a 2-5/16" ball on one mount—just pull the pins, rotate, and reinsert to change sizes. That means no juggling multiple mounts or wrenches when you need to swap from one trailer to another. It’s a simple way to keep your towing gear streamlined and ready for whatever job comes next.

Reduces Noise and Keeps Things Tight: Anti-Rattle Design

Nobody likes hearing clunks from the hitch when towing down the road. The anti-rattle shank on this CURT mount helps cut down that movement inside the receiver for a quieter, smoother ride. It’s one of those small touches that makes towing feel more solid and controlled every trip out.

Built to Last Through Weather and Use: Corrosion-Resistant Finish

Rain, dust, and road grime are hard on towing gear. This mount’s black powder coat and chrome-plated balls keep rust at bay so it stays looking good and working right after long hauls or bad weather. With strong steel under that finish, it’s made for dependable use season after season without fuss.

Specs

Application

  • Application: 2" x 2" trailer hitch receivers

Weight and Capacity

  • Gross towing weight: When used with 2" ball: 10,000 lbs
  • Gross towing weight: When used with 2-5/16" ball: 15,000 lbs
  • Tongue weight: When used with 2" ball: 1,000 lbs
  • Tongue weight: When used with 2-5/16" ball: 1,500 lbs

Dimensions

  • Maximum rise: 4-1/2"
  • Maximum drop: 5-1/2"
  • Distance between vertical adjustment holes: 1-1/4"
  • Pin hole diameter: 5/8"

Warranty

  • Limited warranty: 1-year

45935 Curt Adjustable Trailer Hitch Ball Mount with Dual Ball - 2" Shank - 15K

Installation Details C99NR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.8

395 reviews
Review sort icon
This steel, adjustable ball mount lets you tow up to 10,000 lbs with the 2" ball or 15,000 lbs with the 2-5/16" ball. Can be used in 5-1/2" drop or 4-1/2" rise positions. Fits 2" x 2" hitch receivers.

by:

Very heavily-built. I like the simplicity of this as compared to other two-ball mounts. Note that it does not include hitch pin.



by:

Great quality. Outside of some surface rust at the contact points it looks new.



by:

Great product.

Shaun profile picture

Shaun

3/19/2025

So far so good seems really durable and easy to adjust the trailer from different heights. It makes life alot simpler

Robin H. profile picture
Etrailer Expert

Robin H.

3/19/2025

@Shaun glad to hear it!


by:

Fit great, they don't shake or appear loose. I am pleased with the purchase.



by:

Service and delivery was very good.



by:

Super heavy duty hitch for sure. Triple boxed to make it here damage free, other than slow UPS shipping over the holidays, all went perfect



by:

Good quality, heavy duty construction, no issues.



by:

Make it clear that a hitch pin is not i ncluded!



by:

I have used this Curt adjustable height 2-ball hitch on two different trucks and four different trailers. The easy height adjustment has allowed me to tow each trailer at the correct height without using different height receivers and the ability to select between a 2" or a 2 5/16" ball on one unit has made my towing a breeze. Thanks E-trailer for selling such a versatile hitch!



by:

It is easy to adjust the hight and does the job.



by:

This is heavy duty and just what I needed to get a low enough drop for my enclosed trailer.

Victoria H. profile picture

Victoria H.

2/20/2025

I'm glad we had just what you needed to get the right drop for your enclosed trailer hook-up, John! What are you hauling?



by:

I have not used it yet, but I love how strong this hitch is.
I did notice that the adjustment pins are larger than the standard 5/8 receiver pin, so I hope I don't lose them. Maybe I should find out where I can get a couple? I'll check with y'all to see if I can order them separately. Better to have and not need than to need and not have!

Brooke M. profile picture
Etrailer Expert

Brooke M.

12/4/2024

We carry those pins! Part # C56NR is what you are looking for. Thanks!



by:

It appears to work well, and well-made (strength). It is, however, the ugliest trailer hitch I've ever encountered, hence it doesn't get the 5 it should have. Once again, your sales/service and product quality is bar none, the Absolute Best! Thanks so much! PS: I love how you retain and display previous purchases - awesome!



by:

Heavy duty construction. Quick and easy adjustments. Looks like it can handle any kind of pressure



by:

Practical functional and a very good looking trailer hitch. Heavy duty and durable looks like it will last a lifetime.



by:

Works great!!



by:

Well made, easy to adjust. Fits perfectly with the Curt HD receiver hitch.



by:

Love the ball mount; Definity heavy duty and I get a workout lifting it!



by:

The product was exactly what I thought it was when I received it and it performed Florida State are you still on my motorhome until a large trailer then I can take it and put it on my truck to tow another trailer it's well built it will last forever if you need a good hitch areas of weight be adjustable this is the one I've always had a good experience purchasing from Etrailer



by:

Little loud and clunky but does the job.



by:

This is a very nice quality hitch and it made leveling the differnt trailers I have very easy. Very satisfied. Thanks for the fast shipping too!



by:

Just to let you know, as a long time user your hitch's are the safest and strongest ever to pull my trailer. I never needed a adjustable hitch but two things happened that changed my mind. A big rain at the race track recently required many trailers to be relocated we needed hitches with various ball heights. Also my jet ski trailer, open boat trailer and my race car trailer all need different height and ball sizes. thanks for making a very good product.



by:

Super nice hitch and ball setup. Easy to move up or down. No slop in the unit.It makes switching between my dump trailer and enclosed trailer a breeze and no longer need two separate hitches.



by:

The anti rattle feature makes it very difficult to get the 2nd pin in. I hope that it wears down with time and becomes easier, if not I will be filing it down. I have a different hitch for my 2500 that I love and wish they made with the same rating in a 2" receiver. Still rating it average as I like the 2 ball functionality and height adjustment to fit both of my trailers with this one hitch. I just wish it was easier to adjust.

Jeremy profile picture

Jeremy

1/12/2026

One later and it has worn in where it is much easier to remove and re-install the 2nd pin. It took a month or so and a handful of adjusting it and it is much smoother and easier. Now my only complaint is that it sticks out a good amount further than any other mount and trailers with shorter chains or wiring may need to be extended. Still satisfied as these are minor complaints and it performs its main function of adjustability for multiple trailers excellently.



by:

This hitch is so heavy duty. I like that it has
Two ball sizes. Recently I rented equipment
from Home Depot & it required a 2&5/16 ball.
I just flipped the hitch over and hooked up


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