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Curt RockerBall Anti-Rattle Towing Kit - 2" Ball - 5" Drop, 4" Rise - 7,500 lbs
(27 reviews)
Price: $99.95
In Stock
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Curt RockerBall Anti-Rattle Towing Kit - 2" Ball - 5" Drop, 4" Rise - 7,500 lbs
Part Number: C43KR
In Stock
$99.95
Retail:$128.95
You Save: 22%
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We'll connect you with nearby partnered installers who know this exact setup.
- All Info
- Reviews (27)
- Q & A (0)
- Photos
CURT Trailer Hitch Ball Mount - C43KR
Highlights
- 7,500 lbs GTW for Everyday Loads: Handles campers, boats, and small equipment trailers with ease.
- ShockDrop Cushioning for Smoother Rides: Polyurethane core absorbs road shock and vibration to protect your truck and trailer.
- 5" Drop or 4" Rise for Level Towing: Keeps your trailer even when towing with different ride heights.
- Anti-Rattle Kit for Quiet Towing: Threaded pin keeps hitch tight to cut down on noise and movement.
- Forged Steel with Corrosion Protection: Chrome-plated ball and black powder coat resist rust and wear from the road.
- Low-Maintenance Design: No airbags or bearings to service for long-lasting, hassle-free towing.
Features to know about
Smooths Out the Ride: ShockDrop Technology That Absorbs Road Impact
Regular ball mounts send every bump straight through your truck and trailer. Curt’s RockerBall with built-in ShockDrop technology changes that. The flexible polyurethane core cushions vibrations and jolts, reducing noise and harsh feedback. It keeps towing comfortable and prevents shock loads from hammering your suspension and brakes when you hit potholes or brake hard.
Keeps Your Trailer Level: 5" Drop or 4" Rise
The right height makes all the difference for stable towing. This mount gives you a 5" drop or a 4" rise so you can match your trailer’s coupler height perfectly. That means your setup stays level, your load stays even, and you get steadier handling on the road. The shank fits 2" x 2" hitch receivers, giving you a solid, standard connection point that’s easy to set up.
Cuts Down Rattle and Sway: Built-In Anti-Rattle Kit
Nobody likes a noisy hitch. The anti-rattle kit included with this setup keeps movement tight between the mount and receiver. A threaded pin locks everything in place to stop vibration and sway before it starts. Once it’s snugged down, the result is a quieter tow with less clunking when you accelerate or stop.
Built to Last: Forged Steel Strength with Corrosion Protection
Towing gear lives a tough life—rain, salt, and road grime all take their toll. This RockerBall kit uses forged steel construction for dependable strength rated at 7,500 lbs gross towing weight and 750 lbs tongue weight. The black carbide powder coat on the shank and chrome plating on the ball resist rust for long-term durability. It’s tested to meet SAE J684 safety standards and backed by a limited lifetime warranty for peace of mind.
Low Maintenance by Design: Virtually Service-Free Setup
With no airbags or bearings to maintain, this hitch ball is practically maintenance-free. When it needs attention, the built-in grease zerk fitting lets you lube the isolator core quickly to keep things operating quietly and smoothly season after season.
Specs
Application
- Application: 2" x 2" trailer hitch receivers
Weight and Capacity
- Gross towing weight: 7,500 lbs
- Tongue weight: 750 lbs
Dimensions
- Ball diameter: 2"
- Shank dimensions: 2-1/8" long x 1" diameter
- Ball mount length: 9-1/4" from center of hitch pin hole to center of ball hole
- Drop: 5" from top of inside of hitch opening
- Rise: 4"
- Pin hole diameter: 5/8"
Warranty
- Limited lifetime warranty
Note
The hitch ball will sit 1-1/2" higher than a standard hitch ball due to the shock absorbing base.
C69HR Curt Anti-Rattle Kit for 2" Trailer Hitches
40047 Curt RockerBall Trailer Ball w/ ShockDrop - 7,500 lbs - 2"
45070 Curt Ball Mount - 4" Rise, 6" Drop, 9-1/4 Long - 7.5K
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Product did not meet expectations
Ratings & Reviews
4.5
27 reviews
by:
David
03/26/2026
Nice hitch
NO RATTLING when pulling trailor
NO RATTLING when pulling trailor
by:
C
02/17/2022
Ball is not mounted. Pictures and videos show ball mounted. And when I have bought a “kit” in the past, the ball was mounted.
I can’t attach the ball myself and only reason I purchased from eTrailer was that pictures implied that the ball would be mounted.
I can’t attach the ball myself and only reason I purchased from eTrailer was that pictures implied that the ball would be mounted.
by:
Matthew
02/03/2023
Somewhat disappointed in Curt with this product and I have always been a big Curt fan. The first one of these I ordered was the listed 3" drop unit. The base of the rocker ball is almost 1 7/8" tall so on a 4 inch drop ball mount its really only a 2 inch drop hitch so be aware when ordering. I had to send the first back and reorder the larger drop unit. When I received the larger drop unit I put it in the receiver like many other hitches I have used and proceeded to properly torque the ball down. Because the rocker ball has a pivot point its very important that it stay parallel to the receiver. Curt includes a sheet metal plate that shims in between the ball mount and the ball to prevent it from turning. The plate is no where near strong enough though and at 224 ft/lb the plate bent and the ball rotated. After the plate is bent it is almost impossible to get he thing torqued down right and lined up.
by:
Joe
11/01/2025
Works great. Eliminates the rattle.
by:
Joy
06/16/2022
Heavy-duty hitch! Customer service in finding the right one at etrailor was excellent!
by:
Tony
03/18/2022
Nice solid piece with weight. The only issue I have is that the ball is only secured down with a bolt and not lockable to prevent theft.
by:
Darren
03/20/2025
Works great!! No thumping on starts and starts. Excellent service too!
by:
Steven
08/16/2024
Took an extra day to get it, but everything came in as promised and in one piece!
Another satisfying transaction =)
Another satisfying transaction =)
by:
Al
12/16/2021
Very good quality and fast delivery.
by:
Gc
09/23/2026
by:
Paul
04/29/2024
Great
by:
Dave
01/28/2021
by:
Mark
09/14/2026
Ball mount needs a little more drop to allow for the additional height of the rocker ball.
by:
Barbara
06/30/2024
This was a game changer for us. The previous hitch receiver made so much noise and we felt the trailer a lot more over bumps than we do with this new hitch. Highly recommend.
Barbara
7/20/2025
Amazing. We still love this a year+ later.
by:
Michael
03/19/2025
This Curt towing kit has worked flawlessly. The reduction in rattling and jerking is quite noticeable (compared to my standard hitch set-up). My primary use of the Curt kit has been the towing of my teardrop camper; logging thousands of miles already with no problems, and no problems anticipated. The only thing now, a year later, is that the chrome on part of the RockerBall in contact with the hitch has worn off, but this is not surprising to me. I am quite satisfied with this product.
Brooke M.
3/20/2025
This is great! After a year of wear and tear and plenty of travel time it's still going strong -- love to see that! Thanks for the review :) Where are you headed next with the camper?
by:
Michael
03/04/2021
The hitch works great as advertised. A great company to deal with along with their prices.
Michael L.
3/5/2022
As if it was still new. Great product.
by:
Matthew
09/13/2023
This all-in-one kit does everything it promises to do. I wish I'd learned about it sooner.
by:
Alan
05/20/2026
by:
Carlos
12/04/2020
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.
by:
Dale
05/27/2023
Great product!
by:
Sergei
10/04/2022
by:
Jeffrey
08/02/2022
by:
Aron
11/14/2024
by:
Nick
02/04/2024
by:
Tate
07/28/2022
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Show More Reviews
See what our Experts say about this CURT Trailer Hitch Ball Mount
- Recommended Rise for Ball Mount on 2022 Subaru Outback Wilderness Towing Escapod TopoThe Curt RockerBall Anti-Rattle Towing Kit # C43KR takes the additional height of the base of the RockerBall into account for the listed 4" rise and 5" drop. I have attached an image below showing how it is measured. Typically, you find the correct rise and drop by measuring the distance from the ground to the top of your receiver hitch opening and subtracting the distance from the ground to the bottom of the coupler. This should be done with your vehicle loaded for accuracy, you do not...
view full answer...
- Looking For Fixed Ball Mount For 2" Hitch With 5" Drop And 2-5/16" BallHello Marilyn; I do have a solution for you. We have the Curt Heavy Duty Forged Ball Mount # C53JR which is for a 2" hitch, has a 6" drop and a 2-5/16" ball. This is a heavy-duty forged ball mount and is rated for 15,000 lbs. If you prefer a standard fixed ball mount, I recommend the Curt Dual Length Ball Mount for 2" Hitches # C45240 which has a 5-3/4" drop. You can use this along with the 2-5/16" Hitch Ball # C40007. If it were me I would go with the # C53JR simply because the ball...
view full answer... - Gen-Y or Curt RockerBall For 300-400 lb Tongue Weight in 2 Inch HitchFor your tongue weight, you are right about the Gen-Y Glyder like # 325-GH-12001 not being the best option as that requires a tongue weight of at least 400 lbs to reap the benefits. So for your tongue weight below that, I recommend the RockerBall for the best shock absorption. The Convert-A-Ball and its polyurethane interior won't give you as much cushioning as the RockerBall (which is not compatible with the Convert-A-Ball or other cushioned ball mounts), which is why I like it more....
view full answer... - Why is the Rise Measurement Different From the Drop Measurement on Ball MountsThe reason why ball mounts like the # EBMK4 have a different rise and drop measurement is because of the way they are measured. Rise is the distance from the top of the shank to the top of the ball platform when the ball mount is oriented for greater coupler height. Drop is the distance from the top of the shank to the top of the ball platform when the ball mount is oriented for lower coupler height. Both are measured from the top of the shank. The reason for this is because you use the...
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- Can The Curt RockerBall Be Used With Convert-A-Ball Shock Absorbing Ball Mount? I personally spoke to Curt who informed me their Curt RockerBall Shock Absorbing 2" Hitch Ball # C40047 should not be used with the Convert-A-Ball Ball Mounts including # CAB-UM. For the best experience I recommend using a ball mount with the correct amount of drop with the RockerBall and a anti-rattle. This will eliminate the play between the ball mount and your receiver allowing the RockerBall to absorb the trailer shock. We have a couple kits which have all the parts listed below otherwise...
view full answer... - Compatibility of Gen-Y Glyder Shock Absorbing Ball Mount With Surge Brakes and Lower Tongue WeightThere will be no issues with using surge brakes along with the Gen-Y Glyder Shock Absorbing Ball Mount for 2" Hitches - 6" Drop - 7K # 325-GH-12005. Also, the Glyder can be used with a lower tongue weight and an empty trailer. The only problem is you need to be at the 4-700 lb range in order to benefit from the built-in shock absorption. If your loaded tongue weight is going to be 250-300 lbs then I would not recommend using this ball mount. Instead, I would recommend the Curt RockerBall...
view full answer... - Parts Needed to Tow a Trailer with a 2019 Chevy TraxWe have the parts needed to tow a trailer with your 2019 Chevy Trax but the owner's manual states not to tow trailers with this vehicle so you'll be doing so at your own risk. I recommend finding/borrowing/renting a different vehicle to accomplish this but if you're bound and determined here is what you need: Draw-Tite Max-Frame Trailer Hitch Receiver - # DT32GR Trailer Wiring - LS # 118659 - OR - LT and Premier # 118751 Towing Kit - # C43KR Be sure to check out the linked ball mount...
view full answer... - Height Dimensions Of The Curt RockerBall Anti-Rattle Towing Kit # C43KRHey Randy, The Curt RockerBall Anti-Rattle Towing Kit # C43KR is made with the Curt Ball Mount for 2" Hitches # C45070, which has a 6" drop. The RockerBall # C40047 is going to add an 1" in height, giving you the 5" drop from the top of the shank down to the base of the ball.
view full answer... - Can Curt Rockerball Hitch Ball be Used with Surge Trailer BrakesThe Curt Rockerballs like the # C43KR will not interfere with your surge brakes. The movement they allow would not prevent the inertia of your vehicle applying the brakes from activating your surge actuator.
view full answer... - Is The Curt RockerBall Anti-Rattle Towing Kit # C43KR Available With a 2-5/16" Hitch Ball? For this you will need the Curt Ball Mount # C45070, Curt Anti-Rattle Kit # C69HR and the Curt RockerBall Shock Absorbing 2-5/16" Hitch Ball # C82KR. The ball mount and anti-rattle kit are the same ones that are included with the Curt RockerBall Anti-Rattle Towing Kit # C43KR.
view full answer... - Will Curt RockerBall Interfere with Surge Brakes The Curt Rockerballs like the # C43KR will not interfere with your surge brakes. The movement they allow would not prevent the inertia of your vehicle applying the brakes from activating your surge actuator.
view full answer... - Rust Proof Adjustable Ball Mount w/ 5 Inch Drop For a rust proof ball mount you're going to want the Rapid Hitch Adjustable, Aluminum Ball Mount Kit w/ 2 Greaseless Balls - 5-1/2" Drop item # AM3405. This adjustable ball mount has a 5-1/2" drop and 6-1/2" rise. It also has a two ball combo of 2" and 2-5/16" for hauling different trailers. The greaseless nylon cap allows for easy rotation between ball and coupler when towing this will help with rattle.
view full answer... - Weight Distribution System for Leveling Tacoma and Utility Trailer Under Heavy LoadYou can always adjust your ball mount an inch or two higher than you normally have your ball mount when you know your trailer's going to be loaded down. If you are wanting to level out your 2004 Toyota Tacoma and utility trailer when it is fully loaded you will need to use a weight distribution system like the Blue Ox SwayPro Weight Distribution w/ Sway Control - Clamp On - 8,000 lbs GTW, 750 lbs TW item # BXW0750. The Blue Ox SwayPro uses optimal points of tension to help prevent trailer...
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Do you have a question about this Trailer Hitch Ball Mount?
Info for this part was:
Installed by:
Andrew K
Installed by:
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Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
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At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Jenny N.
2/22/2022
This ball mount comes to us from the manufacturer as a kit, without the ball mounted to the ball mount. We do have a ball mount with a 4 inch that comes with the ball torqued. It is part # C45154.