1. Trailer Hitch Ball
  2. Curt
  3. 2-5/16 Inch Diameter Ball
  4. 1 Inch Diameter Shank
  5. Shock Absorbing Ball
  6. 7500 lbs GTW
Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K

Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K

Item # C82KR
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Trailer Hitch Ball
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Shipping Weight: 7 lbs
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Curt RockerBall with ShockDrop technology bolts onto your standard ball mounts to provide comfort and control while towing. Chrome ball has a 1" diameter shank. Anti-swivel, forged steel base has black powder coat finish. Lowest Prices for the best trailer hitch ball from Curt. Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K part number C82KR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (42)
  • Q & A (4)
  • Videos (2)
  • Photos
  • Why etrailer?

Curt Trailer Hitch Ball - C82KR

  • 2-5/16 Inch Diameter Ball
  • 1 Inch Diameter Shank
  • Shock Absorbing Ball
  • 7500 lbs GTW
  • Chrome-Plated Steel
  • Curt

Curt RockerBall with ShockDrop technology bolts onto your standard ball mounts to provide comfort and control while towing. Chrome ball has a 1" diameter shank. Anti-swivel, forged steel base has black powder coat finish.


Features:

  • Hitch ball provides a connection point for your trailer's coupler
    • Fits most existing ball mounts
  • Integrated ShockDrop technology
    • Cushioned isolators reduce rattling and vibration for a more comfortable ride
    • Reduces shock loads to the vehicle during sudden braking or acceleration
    • Minimizes stress on tow vehicle's suspension and brakes for extended longevity
  • Fine threads provide tight, strong grip
  • Anti-swivel base is constructed of forged steel for dependable towing power
  • Durable carbide black powder coat finish on base
  • Corrosion-resistant chrome finish on ball
  • Virtually maintenance-free with no airbags or bearings to service
    • Built-in grease zerk makes it easy to lubricate when necessary
  • Tested for safety to meet SAE J684 specifications
  • Lock washer and nut included


Specs:

  • Ball diameter: 2-5/16"
  • Shank diameter: 1"
  • Weight capacity: 7,500 lbs
  • Rocker base dimensions: 2-1/2" long x 2-1/2" wide
  • 1-Year limited warranty


Note: All RockerBall hitch balls will sit 1-1/2" higher than a standard hitch ball due to the shock absorbing base.

The mounting platform on your ball mount must be at least 3/8" thick and the hole size must not be more than 1/16" larger in diameter than the ball's threaded shank.


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 RockerBall hitch ball.


Shock Absorbing ShockDrop Technology

Curt RockerBall with SockDrop Technology

The RockerBall hitch ball features Curt's innovative ShockDrop technology, which is engineered to suppress vibrations and rattling while you're towing. When you hit a bump, the ball compresses around the flexible, polyurethane core. This durable material absorbs excess shock at the coupling point 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.


Premium Construction

Curt RockerBall Construction

This hitch ball is built to last with its forged steel construction and durable powder coat finish. The flexible, shock-absorbing polyurethane core withstands extreme heat for long-lasting performance, and the chrome-plated ball resists corrosion.


Curt RockerBall Zerk Fitting

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



40248 Curt Rocker Ball with Shock Drop Technology - 2-5/16" Trailer Ball - Chrome - 7,500 lbs

Installation Details C82KR Installation instructions



Video of Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Curt Trailer Hitch Ball - Smooth Ride Trailer Ball - C82KR

Michael: Hi there I'm Michael with etrailer.com. Today, we're going to take a quick look at the Curt RockerBall shock absorbing hitch ball. This is going to mount onto your standard ball mount, and it is going to provide that same attachment point for your 2/16 and 5/16 inch ball coupler on your trailer so that you can easily pull your trailer down the road. But where this is going to be different from other hitch ball options is that it's got this integrated shock drop technology on it.So you can see, this has a pivot point here that's going to allow that ball to rock forward and back. It's got cushioned isolators inside so that if you make a sudden stop, it's going to help absorb some of that shock as the ball moves forward. Same if you make a sudden acceleration, the ball will rock back to try and help smooth out that ride, so you don't get that sudden jerking sensation.

That's going to help minimize the stress on your tow vehicles, suspension, and brakes, and it's going to just make it an overall more enjoyable ride for you and your passengers.This hitch ball is going to be your standard 2/16 and 5/16 inch ball. So it will work with that coupler, no worries there. It does have a weight capacity of 7,500 pounds. Now keep in mind, you always want to make sure that you're going with the lowest number between your ball, your ball mount your hitch and your vehicle, make sure that you're not exceeding any of the weight ratings on those. Your setup's only as strong as your weakest link.

So keep that in mind. Another thing too, this will work with almost all existing ball mounts, but this will sit up about an inch and a half higher than your standard hitch ball due to the shock absorbing base.So you want to make sure that you're going to have room for that in your setup, and you will need to make sure that your mounting platform is going to have a least 3/8 inch thick steel or metal plate there for this to mount onto. And the hole for your shank needs to be no more than 1/16 of an inch larger in diameter than this threaded shank here, which for this model is one inch. So you want to make sure that your opening is no more than an inch and 1/16 in diameter. But our one inch diameter threaded shank is going to provide a nice tight grip so that as we tighten down the included lock washer and nut, we get a nice sturdy grip so that we don't have to worry about it moving around on us.You can see on the inside of our shank there, we do have a grease Zerk to keep everything lubricated and to make sure that this is going to keep moving the way supposed to.

Now, these are all made of quality components. So we've got forged steel for our anti-swivel base. We do have a black powder coat finish on the base so it's going to resist rust and corrosion, those sort of things. And on our steel ball, we also have a corrosion resistant chrome finish. So all of this is going to help it to last a nice long time, give you a nice sturdy, solid long-lasting option.You aren't going to have to worry about airbags or bearings or anything like that, other than greasing up through that grease Zerk every once in a while.

This is going to be a pretty maintenance free option for you to help smooth out that ride. This has been tested and it meets the SAE J684 specifications. So it's those high quality standards. You can trust it's going to do a good job for you.It does come with a one year limited warranty. So if you we're to have any problems within that first year, you could give us a call, we'd be happy to help you out with that. But I really don't think you're going to have any problems with this. I think it's just going to do a good job of providing that connection point for your trailer and allowing you to have a much smoother ride so that you don't have to deal with that jarring when you're stopping and starting. So that's going to complete our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.


Customer Reviews

Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K - C82KR

Average Customer Rating:  4.6 out of 5 stars   (42 Customer Reviews)

Curt RockerBall with ShockDrop technology bolts onto your standard ball mounts to provide comfort and control while towing. Chrome ball has a 1" diameter shank. Anti-swivel, forged steel base has black powder coat finish.

- C82KR
by:

I purchased this to test out. I’m using it on a Ford Ranger and towing a 6x16 enclosed trailer. Curt makes great products I’m sure it won’t disappoint.



- C82KR
by:

It looks like a quality product, but after buying 3 different drop hitches for my truck it doesn't look like I will ever find one that it will fit on............. so I just bought a stainless ball and went on. Makes for a nice $[XX] paperweight or conversation piece.



- C82KR
by:

It does seem to make a smoother ride. I tow a 20 foot cargo trailer which gets quite heavy at times.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Great product. Simple compact design. Dampens movement between tow vehicle and trailer. Makes for a smoother towing experience.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


You guys always provide the best service. The rocker ball smoothed out my boat trailer towing just as advertised. Looking forward to my wheel and tire package coming next.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Quality looks great won’t be putting on the truck till the snow is gone deliver early thanks etrailer


Comments
Great good product
Bruce - 03/10/2021


- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


Received product before due date however, both our WD Hitches do not have the standard piece to allow the Anti-Rotation Plate to be useful. Pictures attached. Checking with etrailer to see what can be done before modifying either the ball or the hitches. Only other issue was packaging, it was well packed on bottom side but not on top which allowed the product to distort the box it was shipped in but it did come fully in tact with no visible harm. Mentioning this for future delivery of such items.


Comments
I was able to contact Curt and the Curt RockerBall is not compatible with weight distribution systems. It is only compatible with a ball mount that has a 1-14 diameter ball shank hole.
-- Etrailer Expert Heather A - 06/16/2020


- C94CR
by:

Review from a similar RockerBall in Trailer Hitch Ball


great service fast shipping



- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


All seems great delivery was excellent product looks great but I haven’t installed it yet thought the pin was with it so do you have a very hard material pin that goes with the forged ball mount. Let me know asap Thx



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Changed over from the conventional Ball. Noticeable difference after installing Rockerball. Makes the ride quieter and when braking no noises and no trailer play when braking or accelerating. recommended Product.



- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


Fantastic quality and customer service. Delivery was fast as well!



- C63KR
by:

Review from a similar RockerBall in Trailer Hitch Ball


So I’ve been wanting the rocker ball for a while now and I’ve finally bought it. I bought the kit and it comes with a regular curt hitch, anti rattle kit, and the Rocker Ball. Construction seems solid on all Items. The hitch did arrived with a small area the size of half a penny of the powder coating chipped. I think it might’ve occurred during transit. Installation is fast BUT and a big BUT is very difficult to keep the rocker ball aligned to the hitch while you are torquing the nut. Mine ended up being noticeable sideways when I finished torquing it. I had to try it a couple of times and even then I couldn’t torque it all the way without 1. The rockerball assembly going sideways and 2. Without the tabs on the metal bracket bending.( one corner did bend. Anyways seems like a good product and if you don’t care of the Rockerball not being sorta aligned ( I honestly think that it shouldn’t be of fwhen fully tightened because then the rocker ball is not going to move straight back and straight forward) then I supposed it’s ok... If you are like me that gets bothered by details like this then find something else. I would’ve returned it but I scratched the hitch trying to get the Rockerball sorta aligned. Anyways take my experience with a grain of salt and good luck.



- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


Unique design and well made. Eliminates a lot of push and pull from the trailer.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


I pull a Teardrop trailer with my SUV and the Curt RockerBall has definitely take some of the road vibrations and harshness out of towing. Highly recommended.



- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


Good idea, though actual towing feels chaotic. Pulling a 4,500 pound camper trailer with a F150 - Max Tow Package and this hitch causes the trailer to surge back and forth when braking, accelerating and/or rolling over bumps in the road. I don't know if my hitch is defective or not, but I will not be using this hitch anymore. The other issue is, when torquing the ball hitch to the specified 450 ft/lbs - the flanges that are supposed to hold the ball in place bent and I had to find an alternative to secure it from turning.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Great product!!! Slow shipping. 12 days between order and delivery



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


i pull a bass boat sometimes on a rough gravel road and the ball make a difference of not jerking on frame.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Who has a machine to tork a 250 ft lb nut? I found someone who had a manual tork wrench that could handle that much. Luckily he was huge enough to tighten it. But it still was crooked on the



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Well made and packaged. Instructions are simple and thorough with helpful pictures. I haven't had a chance to use it but it appears that it will function as claimed. William in customer service has been in contact and very helpful in expediting the remainder of my order. Great quality, customer service, shipping and prices. Thanks and be safe and well



- C63KR
by:

Review from a similar RockerBall in Trailer Hitch Ball


The hitch works great as advertised. A great company to deal with along with their prices.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Really delighted at fast delivery and quality of product as well as ease of installation. Worst part was getting old bolt off but was my kind of switch-over and I needed the extra 1 1/2 inches because I was a little heavy on the tongue for my boat. Would recommend



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Just put in on today and what a difference it made close to a 3500 lbs boat and trailer if I need to will buy again again and yes again lol quick shipping as well [Thumbs Up] satisfied



- C29FR
by:

Review from a similar RockerBall in Trailer Hitch Ball


nothing special



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


New hitch and ball for new utility trailer. Appears to be good quality. Can't wait to use.



- C40047
by:

Review from a similar RockerBall in Trailer Hitch Ball


Work great ...iam very happy,


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Ask the Experts about this Curt Trailer Hitch Ball

  • Can Curt RockerBall be Used With Curt Channel Style Ball Mount C45901
    Yes, the two can definitely be used together; the Curt RockerBall is available with a 1" diameter shank like you mentioned, which is the same diameter as the hitch ball hole of the Curt Channel Style Adjustable Ball Mount # C45901. You can use either of the following 2" or 2-5/16" RockerBalls with this ball mount: - Curt RockerBall Shock Absorbing 2" Hitch Ball # C40047 - Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball # C82KR I have added links below to video reviews for...
    view full answer...
  • Rockerball With Forged Mount and Sway Control
    The Curt RockerBalls # C82KR are not to be used with sway control. The 2 systems will fight against each other as you are driving. They also will not fit the Curt Forged Ball Mounts # C45341. They require the 2-1/2" wide ball mount for the anti-rotation base that keeps the RockerBall aligned properly. Also the bolt hole must be within 1/16" of the 1" ball threaded shaft. I recommend Curt Ball Mount # C93KR due to the added height of the RockerBall. This will work if your current...
    view full answer...
  • Height of Curt C82KR, C29FR and C40047 RockerBall Trailer Balls
    The height of the Curt RockerBall from the base that sits upon the ball mount to the top of the ball is as follows: - 2-5/16 inch ball with 1 inch diameter shank, # C82KR is 4.607 inches - 2-5/16 inch ball with 1-1/4 inch diameter shank, # C29FR is 4.712 inches - 2 inch ball with 1 inch diameter shank, # C40047 is 4.091 inches I've provided a diagram showing these dimensions.
    view full answer...
    Image 1 for
  • Does Curt Rockerball # C82KR Fit Fastway Aluminum Ball Mount DTBM4600
    Yes the Curt Rockerball part # C82KR does fit the Fastway Aluminum Ball Mount part # DTBM4600 that you referenced.
    view full answer...

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Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Michael B
Installed by:
Michael B
Employee Lindsey S
Edited by:
Lindsey S
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Written by:
Kristina F
Employee Aidan B
Video by:
Aidan B

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