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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Fits 2 Inch Hitch
  4. Fixed Ball Mount
  5. Drop - 2 Inch
  6. Rise - 1 Inch
Curt Shock Absorbing Towing Kit w Sway Control, Wireless Brake Controller - 2-5/16" Ball - 7.5K

Curt Shock Absorbing Towing Kit w Sway Control, Wireless Brake Controller - 2-5/16" Ball - 7.5K

Item # C57DR
Retail:$609.79
Our Price: $462.75
You Save: $147.04
Trailer Hitch Ball Mount
This item qualifies for Free Shipping
Shipping Weight: 29 lbs
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Get the best towing experience with this kit. 2-5/16" Hitch ball absorbs shock. Wireless brake controller applies your trailer's brakes proportionately. Friction sway control helps keep your trailer in line. And hitch pin limits rattle. Great Prices for the best trailer hitch ball mount from CURT. Curt Shock Absorbing Towing Kit w Sway Control, Wireless Brake Controller - 2-5/16" Ball - 7.5K part number C57DR can be ordered online at etrailer.com or call 1-636-306-4830 for expert service.
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CURT Trailer Hitch Ball Mount - C57DR

  • Fits 2 Inch Hitch
  • Fixed Ball Mount
  • Drop - 2 Inch
  • Rise - 1 Inch
  • 2-5/16 Inch Ball
  • One Ball
  • 7500 lbs GTW
  • CURT
  • Steel Shank - Gloss Black
  • Steel Ball

Get the best towing experience with this kit. 2-5/16" Hitch ball absorbs shock. Wireless brake controller applies your trailer's brakes proportionately. Friction sway control helps keep your trailer in line. And hitch pin limits rattle.


Features:

  • Complete kit gives you everything you need to get the most comfortable towing experience
    • Includes brake controller, ball mount, shock-absorbing hitch ball, friction-style sway control, and anti-rattle hitch pin
  • Echo wireless brake controller activates the trailer brakes in proportion to your vehicle's braking action
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
    • Activates immediately - no pausing like with time-delayed brake controllers
    • Connects wirelessly to your smart device for operation
    • Easy to transfer between vehicles
  • Ball mount lets you hook up your trailer to your tow vehicle
    • Shank slides into your vehicle's hitch receiver
    • Both drop and rise positions available to ensure level towing
    • Sturdy steel construction with hollow shank and black gloss powder coat finish
  • RockerBall shock-absorbing hitch ball provides a connection point for your trailer's coupler
    • Integrated ShockDrop technology provides comfort and control while towing
    • Cushioned isolators reduce rattling and vibration for a more comfortable ride
    • Anti-swivel, forged steel base has a black powder coat finish
    • Built-in zerk allows you to lubricate the isolator core when necessary
  • Friction-style sway control effectively fights trailer sway after it begins
    • Reduces side-to-side movement caused by winds, passing traffic, curving roads, or sudden maneuvers
    • Attaches to sway control tab on ball mount with included 1-1/4" hitch ball
  • Anti-rattle kit prevents ball mount from rattling in your hitch receiver
    • Insert bracket into ball mount shank and secure with threaded pin
    • Constructed of high-strength steel with a yellow zinc-plated finish
  • Tested for safety to meet SAE J684 specifications


Specs:

  • Application: trailers with up to 2 axles (4 brake assemblies)
    • Designed for use with electric or electric-over-hydraulic trailer brakes
  • Fits 2" x 2" trailer hitches
  • Gross towing weight: 7,500 lbs
  • Tongue weight: 750 lbs
  • Hitch ball diameter: 2-5/16"
  • Ball mount:
    • Length from center of hitch pin hole to center of hitch ball hole: 7-1/2"
    • Length from center of hitch ball hole to center of sway control ball hole: 5-1/2"
    • Drop: 2" from top of inside of hitch opening
    • Rise: 3/4" from top of inside of hitch opening
    • Pin hole diameter: 5/8"
  • Smart device OS requirements for Echo brake controller:
    • Apple: 8.0 or newer
    • Android: 4.4 or newer
  • Brake controller plug-in unit length: 6-5/8"
  • Friction sway-control ball diameter: 1-1/4"
  • Limited lifetime warranty
    • 1-Year warranty for parts and finish


Notes:

  • The RockerBall hitch ball will sit 1-1/2" higher than a standard hitch ball due to the shock-absorbing base.
  • It is recommended that you remove this sway control unit before backing up/reversing and before towing in slippery conditions such as on wet, icy, gravel, or snow-covered roads.

Echo Wireless Brake Controller

Welcome to an entirely new towing experience. The Curt Echo brake controller puts you in control of your trailer's braking with mobile, Bluetooth operation. The portable unit installs in seconds and allows you to make braking adjustments straight from your smartphone. Easily transfer the Echo between vehicles and store it when it's not in use.


Echo smart control app displays

The Echo Smart Control app is free to download and use. Scan the QR code included with the Curt Echo or search Echo Smart Control in the Apple App Store or Google Play Store. The app has the ability to sync up to 5 Echo devices, and the memory function allows you to save unlimited vehicle-trailer profiles. This makes it easy to transfer the Echo between towing setups.


RockerBall Shock-Absorbing Hitch Ball

a depiction of the Curt RockerBall ShockDrop 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 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.


Friction-Style Sway Control System

The friction-style sway control included in this kit uses a telescoping bar with friction pads to fight trailer sway. Easily adjust the tension with the built-in knob to get the right amount of resistance for your setup.


measurement of friction-style sway control system location on trailer frame

When installing this sway control system, follow the included instructions and measure 24" straight back from the center of the coupler along the frame of the trailer to determine the location of the spacer plate and trailer-mounted attachment ball. To achieve proper alignment, the spacer plate may not be necessary in every application.

How to Measure Drop on Adjustable Ball Mount



45190 Curt RV Towing Starter Kit with Sway Control and Wireless Brake Controller - 2-5/16" Hitch Ball - 2" Hitches - 7,500 lbs

45149 Curt Rocker Ball with Shock Drop Technology and Ball Mount with Sway Control Tab

17200 Curt Friction Style Sway Control System

22321 Curt Anti-Rattle Kit for 2" Trailer Hitches

51180 Curt Echo Wireless Trailer Brake Control - Smart Phone Bluetooth Connection - 1 to 2 Axles - Proportional





Video of Curt Shock Absorbing Towing Kit w Sway Control, Wireless Brake Controller - 2-5/16" Ball - 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 Mount - Shock Absorbing Towing Kit - C57DR

Hi there. I'm Michael with etrailer.com. Today we're gonna take a quick look at this CURT Shock Absorbing Towing Kit with Sway Control and Wireless Brake Controller. This kit is going to give you everything you need to get a comfortable towing experience. It is going to work with your trailers that have up to two axles or four brake assemblies with either electric or electric over hydraulic trailer brakes. This kit will give you your ball mount that will slide into your 2 inch by 2 inch trailer hitch receiver.

This is going to work in both the drop and rise position. So the drop, like we have it here. The ball mount itself will give you a 2 inch drop from the top inside edge of your hitch opening. If we we're to flip this over, use it in the rise position, we'd have about a 3/4 inch rise from the top of our hitch opening, so that will give us a little bit of adjustment there to make sure our trailer's gonna be level. It's a sturdy steel construction with that hollow shank and a gloss black powder coat finish to it.

Inside that hollow shank, you can see we do have our anti-rattle kit installed. So inside there is a little nut that we will tighten our bolt against as we put this in our hitch, and that's going to prevent the ball mount from rattling inside your hitch receiver, so it's going to ride very nicely for us. And then this is constructed of high-strength steel with a yellow zinc plated finish to it, and so it'll do a good job of keeping our setup nice and stable in our hitch receiver. Here on the front, we do have our 2 5/16th inch diameter RockerBall Shock Absorbing Hitch Ball that's going to provide that connection point for our trailer coupler. This does have the integrated ShockDrop technology, so it has cushioned isolators that are gonna reduce rattling and vibration for increased control and comfort as you tow.

It's also going to help produce less wear and tear on your towing setup. This does have an anti-swivel forged steel base that has a black powder coat talk finish on it. This is going to give us a gross towing capacity of 7,500 pounds. The maximum tongue weight is 750 pounds. Now keep in mind, this base is going to sit about an inch and a half higher than your standard hitch ball due to the shock absorbing base, so that drop that we gave before, that 2 inch drop, it's gonna be reduced down to about a half inch drop while we're using this.

We do have a bit more of a rise. If we we're to turn our ball mount over, use it in the rise position, we'll have have about a 2 1/4 inch rise. So again, not a huge difference for keeping your trailer level, but just wanted to give you those measurements so you can make sure it's gonna work for your setup. It does have a built-in grease zerk that's going to make it very easy to lubricate the isolator core when necessary. So very easy maintenance involved there. And then we also are going to have our friction-style sway control that's going to effectively fight trailer sway after it begins. So this will reduce side to side movement caused by winds, passing traffic, curving roads, or sudden maneuvers. This will attach to your trailer with the plate here. They do include hardware to get this attached onto your trailer. And then it will attach onto the 1 1/4 inch hitch ball on our ball mount here. Pull out the pin, get that attached there, so then we'll have that connection between our ball mount and our trailer. This is going to have a telescoping design and that is going to make sure that everything is staying nice and controlled. So we can tighten that down and get it where it needs to go, and that's going to provide that anti-sway property for us. Now, it is recommended that you do remove the sway control unit before you're backing up or before towing in slippery conditions like on ice, snow-covered roads, wet roads, and gravel, that sort of thing. And then we are also gonna have our Eco. Or sorry, Echo Wireless Brake Controller that's gonna plug right into your 7-way at the rear of your vehicle and provides that port for plugging in your 7-way trailer connector there. This does have an internal, 3-axis accelerometer that's going to activate your trailer's brakes in proportion to your vehicle's breaking action. So if you we're to slam on the brakes in your tow vehicle, this is going to sense that abrupt change in speed and it's going to apply the brakes on your trailer with that same intensity. So your trailer is going to be acting the same as your tow vehicle, so everything's gonna be in line and you're not gonna have to worry about push-pulling like you would sometimes get with other kinds of brake controllers. It's gonna activate immediately, so there's no pausing like with your time-delayed brake controllers. This is going to connect wirelessly to your smart device for operation, so this will work with your Apple 8.0 OS or newer, as well as your Android 4.4 or newer operating system. So because this is so easy to get plugged in, it is transferable between vehicles. So any vehicle that has that 7-way at the rear is gonna be able to use this, and very easy to make sure that your trailer's brakes are operating properly. The setup is tested for safety to meet the SAE J684 specifications, so you can trust it is gonna be good quality, do a great job for you. Does also come with a limited lifetime warranty, so if you we're to have any issues with it, you're more than welcome to reach out to us here @etrailer.com. But I really don't think you're gonna have any problems. I think this is gonna do a really good job of absorbing your shock, preventing that rattling and swaying, and making sure that your brakes are operational in relationship to the pressure that you're putting on your brakes in your tow vehicle. So that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching..

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

  • Curt Shock Absorbing Towing Kit w/ Sway Control and Wireless Brake Controller Combo
    I would be happy to help you. We hear this complaint quite often about dealerships not wanting to install after market wiring for random reasons because they want you to purchase theirs usually. The Curt Shock Absorbing Towing Kit w/ Sway Control and Wireless Brake Controller - 2" Hitch - 7.5K item # C57DR would be a great set up for controlling your trailer brakes and addressing sway control issues. Many trailer hitches have restrictions on weight distribution systems so yours not being...
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    I have a solution for you but you can't replace the compressor on a motorhome AC like you would in your home or car. They don't make them with ports to drain and refill the Freon so no one will be able to service them. You will need to replace the AC unit on your 2007 Fleetwood Bounder 34F Workhorse with the Advent Air Replacement RV Air Conditioner for Coleman Setup w/ Start Capacitor item # ACCOL150B. This is a 15,000 Btu unit with a built in start capacitor. The included adapter wiring...
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  • Curt Shock Absorbing Towing Kit w/ Sway Control and without Wireless Brake Controller
    If you wanted to order the Curt Shock Absorbing Towing Starter Kit pat # C57DR without the brake controller you'd just need to order the individual components of the kit without the controller. So what you'd want would be the Rocker Ball # C45WR, the sway control part # 17200 and the Curt anti-rattle kit part # C22321.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Wilson B
Updated by:
Wilson B
Employee Carrie F
Updated by:
Carrie F
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Installed by:
Michael B
Employee Kevin C
Installed by:
Kevin C
Employee Manda E
Written by:
Manda E

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