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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Adjustable Ball Mount
  4. Fits 2-1/2 Inch Hitch
  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

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

Part Number: C57UR
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$649.95
Retail:$856.95
You Save: $207.00
Trailer Hitch Ball Mount
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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. Great 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 1-800-940-8924 for expert service.
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  • Reviews (73)
  • Q & A (0)
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CURT Trailer Hitch Ball Mount - C57UR

  • Adjustable Ball Mount
  • Fits 2-1/2 Inch Hitch
  • 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 Satisfaction Score:


Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (73 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.

by:

I think overall it is a good product but there are some annoyances. To begin with, this hitch is very heavy. The package weight was 75 pounds, but the main body is at least 50. I can manipulate it, but someone weaker may not be able to. Setting the ball is also a bit tricky with the stopper between the ball mount and the riser. I was able to use my body weight to get the stopper compressed and the pin in, but it was difficult. One suggestion might be to hitch the trailer with the pin out then use the tongue weight of the trailer to get the lower pin lined up. This will not be a good solution for being on the lowest position, but it works for all the others.

My other annoyance is it really messes up the back up camera and proximity sensor. Yes, I know I can disable the sensor, but the camera can't be moved which makes hitching alone a bit more annoying. I feel like there is a more elegant design so that there is not a bulge at the top of the riser, but I can't say for sure.



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)



by:

Really heavy duty! heavy!



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!

John H.

8/16/2022

This hitch is still performing very well.i have had zero issues with this hitch. Thanks again etrailer for offering such a great hitch!



by:

I'm very satisfied with the hitch, the price and especially the exceptional service that your company and staff offer!! I was really impressed with the pictures who took the order, packaged it,and shipped it! Totally amazing exceptional experience! Super fast shipping! Keep up the pride in your company!!! Thanks again



by:

Made very well and strong. I shouldn’t have any problems with towing with this.



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

Etrailer Expert

Jenny N.

1/7/2022

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.



by:

This thing is a beast! Don't underestimate its size and weight, you aren't gonna hang this on a nail in your garage when not in use. I need the adjustment range, though it is more hitch capacity than I need currently. Knowing it will handle anything that might come up makes it worth it. Also, it's the first shock absorbing hitch I've owned and never knew what I was missing...Awesome.



by:

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

Melvin H.

11/19/2022

Product works great, makes for a ride while towing.



by:

Shank fits loose and rattles in the receiver, Very Heavy, Looks Great and adds an excellent step for getting into the bed of my truck, the ball height adjustment increments (about 1") was helpful for getting just the right drop. the 13" distance from center of ball to center of pin is perfect for allowing me to be able to put the tall gate down without it hitting the tongue jack on my trailers. But way to heavy -- Please tell Curt to make a downsized version, maybe they could limit the drop to max of 6" and do a weight limit of 15K -- TOO Heavy now, I need to hire Charlie Atlas just to move it around and the UPS driver struggled to get it to our door.....



by:

Love the hitch! it didn’t come with the pin… that was disappointing for the price.
The finish is not the best and and is already flaking and discolored…
Over all I’m glad that I have it…. I feel that the finish is on the low side compared to the Curt brand we all have know to love. I should probably see if I can send it back… maybe I just got a bad powder coat batch…



by:

Excellent and fast service



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



by:

I love the product work excellent for howling my trailer . Super happy thank you
Peter G



by:

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



by:

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



by:

Amazing High quality quick shipping



by:

Worked as advertised. Easy to install, pins fit with little effort, and weighs 80lbs.



by:

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



by:

Very impressed how prompt they were processing my order



by:

Excellent Product. Heavy! Packaged pe rfectly



by:

Expensive but gives you a great ride!



by:

looks good have not used it yet tyvm



by:



by:


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Show More Reviews

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

  • Can Curt Rebellion XD Ball Mount For 2-1/2 Inch Hitch Work With Travel Trailer
    One hundred percent yes, if you are not using weight distribution you can tow your travel trailer using the Rebellion ball mount you asked about: - Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR The # C57UR will fit your Ram's 2-1/2 inch hitch and its 2 inch ball has a 10,000 lb capacity while its 2-5/16 inch ball has a 20,000 lb capacity, both of which are more than enough for your trailer. The Rebellion XD was a really nice choice for towing as it will help smooth...
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  • 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...
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  • Accessories For Curt Rebellion XD For Pulling Wagons
    The Ball Platform # C28KR for a Curt Rebellion XD # C57UR has a 1-1/4" diameter hole opening. We also have the Pintle Mount Attachment # C79FR which has a bolt pattern for mounting accessories like the Pintle # CU87FR. It could also be used with a custom welded mount depending on the type of hitch you need for your wagons.
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  • Availability of Curt Rebellion XD for 2-1/2" Receiver
    The Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls # C57UR comes with a 2-1/2" shank. The 2-5/16" ball has a gross towing weight of 20,000 lbs which is higher than the 15,000 lbs for the # C83WR. The 2" ball capacity remains the same at 10,000 lbs.
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  • 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...
  • 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...
  • 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
  • Adjustable Ball Mount With the Furthest Hitch Pin Center To Hitch Ball Center For Utility Bed Truck
    The Gen-Y Torsion 2-Ball Mount # 325-GH-1324 is going to be the adjustable ball mount which gives you the greatest distance from your hitch pin hole center. From the furthest hole center to ball center this is 16" length. That is 2-3/4" further than the Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR and 4-5/8" further than the Curt Adjustable 2-Ball Mount # C45902 that you currently have. The InfiniteRule Lock Set # 34061651-D will allow you to secure all the parts of...
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  • How Much Ground Clearance is Lost with Curt Rebellion XD Adjustable Ball Mount 8 inch Drop
    The Curt Rebellion XD part # C57UR measures 10 inches from the bottom of the shank that inserts into the hitch opening to the bottom of the ball mount. So you would lose 10 inches of ground clearance measured from bottom of your hitch.
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  • 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...
  • 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...
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  • 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...
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  • 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.
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  • Can Friction Sway Control Be Used With Curt Rebellion XD Shock Absorbing Ball Mount?
    I have another option for you, but the Curt Rebellion XD Shock Absorbing Adjustable Ball Mount # C57UR you were looking at is not compatible with friction sway control such as the Curt # 17200. The only sway control compatible with the Rebellion XD is electric sway control which will require your trailer to have electric trailer brakes. If your trailer has electric trailer brakes then I recommend going with the Tuson # 335TSC-1000 which uses internal sensors to apply your trailer brakes...
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  • 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...
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  • Adjustable Ball Mount Recommendation for Ford F-250 with 2-1/2 inch Hitch
    Thanks for the measurements of your coupler and trailer hitch! With that info we know that you need an 8 inch drop to tow your trailer level. The best option for an adjustable ball mount is the Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2" and 2-5/16" Balls - 20K # C57UR. This has a max 8 inch drop and will give you a much more comfortable ride than other options due to its shock absorption. To lock the ball mount you will need the Lock Set for Curt Rebellion XD Ball...
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  • Which Curt Rebellion XD Ball Mount for 2022 Ram 2500
    Hey Todd, so the Curt Rebellion cushioned ball mounts do a great job cushioning the ride quality when towing but the part # C83WR is for a 2 inch hitch which you probably don't have on your 2022 Ram 2500 so instead you'd probably want the part # C57UR which is designed for the larger hitch size of 2-1/2 inch.
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Info for this part was:

Employee Mike L
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Employee Lindsey S
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Employee Jeff D
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