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  4. 2 Inch Diameter Ball
  5. 1 Inch Diameter Shank
  6. Shock Absorbing Ball
Curt RockerBall Shock Absorbing 2" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K

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

Item # C40047
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Shipping Weight: 5 lbs
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Product Images

In Use/Installed

Curt RockerBall with ShockDrop technology bolts onto standard ball mounts to provide comfort and control while towing. Durable, chrome ball has a 1" diameter x 2-1/8" long shank. Anti-swivel, forged steel base has black powder coat finish. Call 800-298-8924 to order Curt hitch ball part number C40047 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Curt RockerBall Shock Absorbing 2" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K. Hitch Ball reviews from real customers.
  • All Info
  • Reviews (7)
  • Q & A (6)
  • Videos (2)
  • Photos
  • Why etrailer?

Curt Hitch Ball - C40047

  • Trailer Hitch Ball
  • 2 Inch Diameter Ball
  • 1 Inch Diameter Shank
  • Shock Absorbing Ball
  • 7500 lbs GTW
  • Curt
  • 2-1/8 Inch Shank Length

Curt RockerBall with ShockDrop technology bolts onto standard ball mounts to provide comfort and control while towing. Durable, chrome ball has a 1" diameter x 2-1/8" long 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"
  • Shank dimensions: 2-1/8" long x 1" diameter
  • Weight capacity: 7,500 lbs
  • 1-Year limited warranty


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

Not to be used with a cushioned ball mount.


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.



40047 Curt Rocker Ball with Shock Drop Technology - 2" Trailer Ball - Chrome - 7,500 lbs

Installation Details C40047 Installation instructions


California residents: click here


Video of Curt RockerBall Shock Absorbing 2" 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 Curt RockerBall Shock Absorbing Hitch Ball Review


Customer Reviews

Curt RockerBall Shock Absorbing 2" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K - C40047

Average Customer Rating:  5.0 out of 5 stars   (7 Customer Reviews)

Curt RockerBall with ShockDrop technology bolts onto standard ball mounts to provide comfort and control while towing. Durable, chrome ball has a 1" diameter x 2-1/8" long shank. Anti-swivel, forged steel base has black powder coat finish.

- C40047
by:

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 762610



- C40047
by:

Quality looks great won’t be putting on the truck till the snow is gone deliver early thanks etrailer 764662



- C40047
by:

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 786978



- C40047
by:

got my order opened it up and found the chrome had a flaw called etrailer carol super service they are shipping me a new one thanks carol you made my day haven't tried yet snow on the ground in Michigan this looks like just what I need 5 stars 779243



- C40047
by:

got my order opened it up and found the chrome had a flaw called etrailer carol super service they are shipping me a new one thanks carol you made my day haven't tried yet snow on the ground in Michigan this looks like just what I need 779242



- C40047
by:

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 763701



- C40047
by:

Just installed will be using November 14 .seams to be well built 725495


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Ask the Experts about this Curt Hitch Ball

  • Will the Curt RockerBall Shock Absorbing Hitch Ball Work With a Weight Distribution System
    The Curt RockerBall Shock Absorbing 2" Hitch Ball part # C40047 will not work with a weight distribution system because the flange that gets wedged between the platform and base that stops the unit from rotating will not fit over the shank on a weight distribution system. Therefore, the Curt RockerBall must be used with a standard ball mount like the Curt Ball Mount for 2" Hitches part # C45310. If you are looking to add a shock absorbing feature to your weight distribution system you'll...
    view full answer...
  • Why Cant the Curt RockerBall Shock Absorbing Hitch Ball Be Used With a Weight Distribution System
    The Curt RockerBall Shock Absorbing 2" Hitch Ball part # C40047 will not work with a weight distribution system because the flange that gets wedged between the platform and base that stops the unit from rotating will not fit over the shank on a weight distribution system. Therefore, the Curt RockerBall must be used with a standard ball mount like the Curt Ball Mount for 2" Hitches part # C45310. If you are looking to add a shock absorbing feature to your weight distribution system you'll...
    view full answer...
  • Shock Absorbing Ball Mount With 2-5/16" Ball
    The Curt RockerBall Shock Absorbing part # C40047 only comes in a 2" ball at this time. You may consider using a ball mount like part # AMSC2HD that has a shock absorbing core with a 2-5/16" ball. The ball hole diameter is 1-1/4". If you need a ball with that size diameter shank I recommend part # 19286.
    view full answer...
  • Does Curt RockerBall Shock Absorbing 2 Inch Hitch Ball Fit Channel Style Adjustable Ball Mount
    Yes, the RockerBall and channel style ball mount you asked about are absolutely compatible: - Curt RockerBall Shock Absorbing 2" Hitch Ball # C40047 - Curt Channel Style Adjustable Ball Mount # C45901 The reason is, the ball mount accepts a hitch ball with a shank that has a 1" diameter and is at least 2-1/8" long, which is exactly the shank dimensions of the RockerBall. I have added links to video reviews of both parts for you to check out as well.
    view full answer...
  • Recommended Ball Mounts For Curt RockerBall Shock Absorbing Ball
    I may have an option for you but the Curt RockerBall Shock Absorbing 2" Hitch Ball part # C40047 is a 2" ball with a 1" diameter shank so this will not work for your ball mount with a 5/8" hole. If you would like to switch out your ball mount you can use the RockerBall with a ball mount with a 1" diameter I have attached a couple of ball mounts below that will work with the Rockerball since I am not sure how much rise/drop you need in a ball mount. Draw-Tite Ball Mount for 2" Hitches...
    view full answer...
  • Does The Curt RockerBall Shock Absorbing Hitch Ball Have More Of A Rise Compared To A Standard Ball
    You are correct the Curt RockerBall Shock Absorbing 2" Hitch Ball - 1" Diameter Shank - Chrome - 7.5K part # C40047 does have a rise. On a standard hitch ball it sits flush with the ball mount but the RockerBall has the included height of the shock absorber which makes it about 1-1/2" taller than a standard ball. This is important when choosing a ball mount. You want to choose a ball mount that has an additional 2" of drop if your ball mount is in the drop position. For example if your...
    view full answer...




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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Installed by:
Randy B
Video Edited:
Jacob T
Updated by:
Sarah W
Updated by:
Noah M
Video by:
Zach D
Written by:
Kristina F

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