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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Fits 2-1/2 Inch Hitch
  4. Adjustable Ball Mount
  5. Drop - 8 Inch
  6. Rise - 1 Inch
Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K

Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K

Item # C57UR
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Retail:$714.93
Our Price: $649.95
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Trailer Hitch Ball Mount
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Shipping Weight: 75 lbs
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2-1/2" Shock-absorbing ball mount is designed for superior ride comfort and control. ShockDrop core absorbs road vibration and rattling to minimize stress on your rig's suspension and braking systems. Rugged, textured finish resists rust. Lowest Prices for the best trailer hitch ball mount from CURT. Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K part number C57UR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (68)
  • Q & A (0)
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  • Why etrailer?

CURT Trailer Hitch Ball Mount - C57UR

  • Fits 2-1/2 Inch Hitch
  • Adjustable Ball Mount
  • Drop - 8 Inch
  • Rise - 1 Inch
  • 2 Inch Ball
  • 2-5/16 Inch Ball
  • Two Balls
  • 20000 lbs GTW
  • Shock Absorbing
  • CURT
  • Steel Shank - Matte Black
  • Steel Ball

2-1/2" Shock-absorbing ball mount is designed for superior ride comfort and control. ShockDrop core absorbs road vibration and rattling to minimize stress on your rig's suspension and braking systems. Rugged, textured finish resists rust.


Features:

  • Ball mount with included hitch balls lets you hook up your trailer to your tow vehicle
    • Shank slides into hitch receiver on your vehicle
    • 2" Ball and 2-5/16" ball provide connection point for trailer coupler
  • Innovative ShockDrop technology ensures a smooth, steady ride
    • Shock-absorbing cushioned isolator dampens jerking, jarring, bumps, vibrations, chucking, and rattling
    • Virtually maintenance-free - no airbags or bearings to service
  • Adjustable height lets you tow trailers of different heights with the same vehicle
    • Hitch ball platform slides up or down channel and secures in place with included pins and clips
    • 8 Adjustment positions available
  • Textured, dark gray teridium finish resists corrosion and provides a premium look
  • Stainless steel balls resist corrosion
  • Solid carbon steel construction offers exceptional strength and commercial-grade towing capacity
  • Built-in grease zerk lets you easily lubricate internal isolator core
  • Hitch pin and clip or hitch lock for securing to hitch receiver sold separately


Specs:

  • Application: 2-1/2" x 2-1/2" trailer hitch receivers
  • Gross towing weight: 15,000 lbs
  • Tongue weight: 1,500 lbs
  • 2" Ball capacity:
    • Gross towing weight: 10,000 lbs
  • 2-5/16" Ball capacity:
    • Gross towing weight: 20,000 lbs
  • Ball hole diameter: 1-1/4"
  • Maximum drop: 8"
  • Maximum rise: 1"
  • Hitch pin hole diameter: 5/8"
  • Limited lifetime warranty


45949 Curt Rebellion Shock Drop Dimensions

Towing can be brutal, especially when your setup is outfitted with standard, metal-on-metal components. Steel and aluminum can only absorb so much vibration and chucking, so every time you hit a bump in the road, that shock gets transferred to the rest of your rig, leaving it vulnerable to wear and tear. Another unfortunate side effect is an uncomfortable ride for you and your passengers.


Protect your truck and trailer from road shock, vibrations, and rattling - and stay comfortable while you drive - with the shock-absorbing Curt Rebellion XD ball mount.


Shock Absorbing ShockDrop Technology

Curt ShockDrop Technology

The Rebellion XD ball mount features Curt's innovative ShockDrop technology, which is engineered to suppress vibrations and rattling while you're towing. It can even help limit sway. When you hit a bump, the ball mount compresses around the built-in, flexible polyurethane core. This durable material absorbs excess shock so that it doesn't transfer from the truck to your trailer or vice versa. The result is increased control and comfort as you tow, as well as less wear and tear on your towing setup.


Unlike other shock-absorbing systems, which use air bags that require constant monitoring or bearings that are subject to excessive wear, the Rebellion XD is nearly maintenance-free. And it's tested for thousands of cycles to ensure lasting efficiency.


Adjustable Height

Curt Adjustable Ball Mount

The Rebellion is built with an adjustable shank that lets you raise or lower the ball platform to get the rise or drop that you need for your setup. No more swapping out ball mounts to tow different trailers.


To adjust the height of the Rebellion XD ball platform, remove the 2 stainless steel pins and clips and slide the platform along the shank to the desired position. Six positions allow for plenty of versatility so that you can use this ball mount with all of your towing setups. Re-insert the pins once you've found the correct height and replace the clips to secure them in place.


Premium Construction

Curt Ball Mount Premium Construction

The Rebellion XD is built to last with its solid carbon steel construction and premium teridium finish. The flexible, shock-absorbing polyurethane core withstands extreme heat for long-lasting performance. Stainless steel hardware provides superior durability and corrosion resistance.


Curt Ball Mount Grease Zerk

The easily accessible, built-in grease zerk allows you to lubricate the isolator core when necessary, ensuring quiet and trouble-free operation.


How to Measure Drop on Adjustable Ball Mount


45955 Curt Rebellion XD Adjustable Cushion Hitch Ball Mount - Shock Drop - 2-1/2" - 20,000 lbs

Installation Details C57UR Installation instructions




Customer Reviews

Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K - C57UR

Average Customer Rating:  4.9 out of 5 stars   (68 Customer Reviews)

2-1/2" Shock-absorbing ball mount is designed for superior ride comfort and control. ShockDrop core absorbs road vibration and rattling to minimize stress on your rig's suspension and braking systems. Rugged, textured finish resists rust.

- C57UR
by:

It’s a beast! Installed it n pulled my dump trailer no more rattling jerking nosies etc, wish it was 20lbs lighter my only complaint, The locks could be better I won’t be leaving the hitch installed, the locks are light weight n I believe a hammer will break them off, curt needs to use steel or stainless steel for the locks ( body of locks)



- C57UR
by:

It is huge and impressive looking. I haven’t seen the benifits from the cush, but then again, we haven’t really had a heavy load on it yet. One downside is that it sticks so far out from bumper, that it activates the proximity sensors on the bumper. If you remove the ball from hitch it goes away. But


Comments
It is possible to disengage the proximity sensor in the vehicle information menus however you would need to disengage it every time the engine is turned on.
-- Etrailer Expert Jenny N - 01/07/2022


- C57UR
by:

Thank you etrailer for this great hitch! I did some research on this hitch and etrailer had the product in stock, and offered free shipping. I ordered the product on a Monday evening and received the product on a Wednesday afternoon. That is 1 day sooner than I was told. [online vendor] offered this product,but wanted $[XX] for shipping and wouldn't be shipped until 8/20/21. This hitch tows my 16 foot 14,000 pound dump trailer with zero problems, and as smooth as butter. Thank you etrailer!



- C57UR
by:

Robust, Well-Packaged, Excellent Technical support before the sale. Markedly reduced shock during first run with it!



- C57UR
by:

I haven’t used this yet but it is the best hitch I’ve ever had for sure



- C57UR
by:

Heavy duty describes this beast. The machine work and finish are excellent.



- C57UR
by:

Nice product. Very heavy duty. Etrailer people are nice to work with also



- C57UR
by:

looks good have not used it yet tyvm



- C57UR
by:

Expensive but gives you a great ride!



- C57UR
by:

Excellent Product. Heavy! Packaged pe rfectly



- C57UR
by:

Great product and shipping was super fast considering the size and weight of this. Also price was good. It included free shipping. Others and direct from Curt was less competitive



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- C45949-2516
by:

Review from a similar Rebellion XD in Trailer Hitch Ball Mount


Hitch works as advertized, I've hauled my 26ft enclosed with my dually all over the country and it makes expansion joints and the rough northeast roads more bearable. Wish the hitch fit more snug in my receiver, as it rattles and bangs around when unloaded. The finish is horrible on it, 1 year old and its rusting and looks bad considering the price. My truck is parked in winter months and not driven in the rain, and its finish is pretty poor with rust developing. Compared to the Shocker hitch on the gooseneck it doesn't even compare.


Comments
I recommend taking the rust off the ball mount and then using a rust resistant paint to touch up the ball mount. There are several commercial Rustoleum products available however you can also mix water and baking soda into a thick paste and spread the paste all over the metal, making sure that rusty spots are well covered. Let the paste sit on the object for an hour or so. Use steel wool or a wire brush to scour the object and remove the rust. Rinse the paste off with water and dry thoroughly. Then use the paint. I also recommend using an anti-rattle device like part # BX88224
Blue Ox Hitch Receiver Immobilizer II - 2" Hitches
$61.86
to reduce the movement of the ball mount in the hitch.
-- Etrailer Expert Jenny N - 12/09/2021


- C45949
by:

Review from a similar Rebellion XD in Trailer Hitch Ball Mount


The folks at etrailer.com were very helpful and professional in assisting me obtain an alternative to my initial order which was on back order until December due to the Covid-19 virus. I initially ordered the Curt Rebellion XD Shock-Absorbing Adjustable Ball Mount - 2" Hitch - 6-1/4" Drop - 15K with a 2" and a 2 5/16" stainless steel balls. Due to their diligence I was able to learn of the backorder status immediately. Consequently, they were able to provide a work around (chrome balls as opposed to stainless steel). While their dedication facilitated on-time delivery saving the day. I not only recommend them, but I will definitely shop with them again.


Comments
excellent
Joseph - 10/03/2021


- C45949
by:

Review from a similar Rebellion XD in Trailer Hitch Ball Mount


I love this hitch! I drive an 01 2500 ram with leaf springs and my old hitch was a solid 8" hitch. My trailer weights about 5k lbs. With uneven road surfaces, my trailer and truck would pitch and jar as I was driving. An unbelievable difference with my new rebellion xd. So much smother. It's almost as if I wasn't connected to my trailer.


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Show More Reviews

Ask the Experts about this CURT Trailer Hitch Ball Mount



  • Ball Hole to Pin Hole Distance of Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR
    The distance from the hitch pin hole to the center of the hitch ball of the Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR that you referenced is 13-1/4 inches.
    view full answer...
    Image 1 for
  • Will the Step for Curt Adjustable Channel Ball Mounts Work with a Curt Rebellion XD Ball Mount?
    I have a solution for you. Unfortunately, I confirmed with my contact at Curt that the Step for Curt Adjustable Channel Ball Mounts - Anti-Skid Surface # C45909 is not compatible with Curt Rebellion XD Shock-Absorbing Adjustable Ball Mounts like part # C57UR. However, it will fit a Channel Style Adjustable Ballmount - 2" & 2-5/16" Balls - 14,000 lbs # C45900. The # C45900 has an overall capacity of 14,000 pounds and a maximum tongue capacity of 1,400 pounds. If you need a recommendation...
    view full answer...
  • US Manufactured High Capacity Adjustable Ball Mount for 2-1/2 Inch Receiver
    The Curt Rebellion # C57UR XD Shock Absorbing Ball Mount is manufactured in China. If you're looking for something made in the USA, I'd recommend a Gen-Y shock absorbing ball mount for a 2-1/2 inch receiver like # 325-GH-514 which provides up to a 7-1/2 inch rise or drop. The Gen-Y # 325-GH-1125 offers a large 16K capacity featuring a stacked receiver design that's easy to adjust for height. The ball mount can also accept 2 inch hitch accessories, which is pretty convenient. I've linked...
    view full answer...
  • Can The Curt XD Shock Absorbing Ball Mount Replace A Weight Distribution Hitch
    The Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K # C57UR is going to help dampen the jerking, jarring, bumps, vibrations, chucking, and rattling you may be experiencing but isn't going to evenly distribute the tongue weight of your trailer. This means you will still have excessive squat which can give you a rough bumpy ride that will also wear your rear tires quicker, reduce your braking capacity, and disrupt the handling of your 2021 GMC Sierra...
    view full answer...
  • Is There an Adjustable Cushioned Ball Mount for 2-1/2 Inch Hitch With 8 Inch Drop
    Yes, there is an option for an adjustable cushioned ball mount with 8 inches of drop that fits your 2-1/2 inch hitch, which is from Curt: - Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR This ball mount fits 2-1/2 inch hitches, has the maximum 8 inch drop you were looking for, comes with 2 inch and 2-5/16 inch hitch balls, and will give you the cushioned ride you are wanting. In order to secure the ball mount to your hitch and the platform to the mount, you will need...
    view full answer...
  • Locks For Securing Curt Rebellion XD Shock Absorbing Adjustable Ball Mount With 2 & 2-5/16 Balls
    I can absolutely help you as there are a lot of standalone options, but we do have exactly what you are looking for, which are the following: - Curt Rebellion XD Shock Absorbing Adjustable Ball Mount with 2" and 2-5/16" Balls # C57UR - Lock Set for Curt Rebellion XD Ball Mount # C78CR This lock set comes with two locks, one is a lock that secures the ball mount in your hitch, and the other is a lock for the pins on the hitch ball platform, which locks the platform to the shank. This...
    view full answer...
  • Weight Capacity of Curt Rebellion XD Shock Absorbing Adjustable Ball Mount with 2-5/16 Ball
    The Curt Rebellion XD Shock Absorbing Adjustable Ball Mount with 2-5/16" Ball part # C57UR is designed for trailers 20,000 lbs and under. It has built-in cushioning which is great for a smoother ride via shock absorption. However, this limits weight capacity which simply does not work for larger trailers. For this, I recommend the BulletProof Hitches Adjustable 2-Ball Mount for 2" Hitch part # ED206 which is rated for 30,000 lbs and under.
    view full answer...
  • Curt Rebellion XD Shock Absorbing Ball Mount With 2-1/2" Hitch
    The Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR is the only one currently in production that fits a 2-1/2" receiver. It has a 2" and 2-5/16" ball mount that can be flipped depending on your application. The hitch is height adjustable from an 8" drop up to a 1" rise, in 1" increments. You can not flip the hitch portion as it must be in the drop position for the shock absorber to work properly. The Lock Set # C78CR provides you with a locking stainless steel hitch receiver...
    view full answer...
  • Curt Rebellion XD 2 Inch Shank and Reducer Sleeve Over a B&W Tow and Stow
    I would be happy to help you. If you are not going to be utilizing the capacity and are concerned about bottoming out because of the drop you do not need I recommend the Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 15K item # C83WR over the item # C57UR. The shock-absorbing cushioned isolator helps with bumps, vibrations, and chucking you get from hauling a trailer. Unlike other shock-absorbing systems, which use air bags that require constant monitoring...
    view full answer...
  • Can Weight Distribution Hitch be Used with Firestone Air Bags
    Great questions! It is appropriate to use both an air bag kit and a weight distribution system (WDS), depending on the WDS. Most of them say in the instructions whether they are compatible or not and they will give instructions on how to set everything up - which usually entails leveling everything out with the air bags and then installing the WDS. There are sway control setups that exist outside of a WDS but since you can use both I recommend going that route. I really like the Blue...
    view full answer...

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




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