CURT Trailer Hitch Ball Mount
- C57DR
- Fits 2 Inch Hitch
- Fixed Ball Mount
- Drop - 2 Inch
- Rise - 1 Inch
- One Ball
- 7500 lbs GTW
- CURT
- Steel Shank - Gloss Black
- 2-5/16 Inch 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]()
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