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  1. Trailer Hitch Ball Mount
  2. CURT
  3. Adjustable Ball Mount
  4. Fits 2 Inch Hitch
  5. Drop - 2 Inch
  6. One Ball
Curt RockerBall 2-5/16" Shock Absorbing Hitch Ball and Ball Mount w/ Sway Control Tab - 7.5K
CURT

Curt RockerBall 2-5/16" Shock Absorbing Hitch Ball and Ball Mount w/ Sway Control Tab - 7.5K

Part Number: C45WR
In Stock
$135.36
Retail:$192.95
You Save: $57.59
Trailer Hitch Ball Mount
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Curt RockerBall with ShockDrop technology provides comfort and control while towing. Includes corrosion-resistant, black powder coated ball mount. Built-in bracket lets you mount a sway control ball for installation of a friction sway control system. Great Prices for the best trailer hitch ball mount from CURT. Curt RockerBall 2-5/16" Shock Absorbing Hitch Ball and Ball Mount w/ Sway Control Tab - 7.5K part number C45WR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (19)
  • Q & A (0)
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  • Used (1)

CURT Trailer Hitch Ball Mount - C45WR

Highlights

  • 7,500 lbs GTW for Medium Loads: Handles campers, boats, or utility trailers up to 7,500 lbs.
  • ShockDrop Core for a Smoother Ride: Cushioned isolators cut rattling and vibration on rough roads.
  • Less Wear on Truck and Trailer: Dampens shock from bumps, braking, or acceleration to protect components.
  • 2" Drop for Level Towing: Keeps your trailer height matched when hooked up to standard 2" hitches.
  • Sway Control Tab Built In: Lets you attach a friction sway control unit for steadier handling.
  • Forged Steel with Rust-Resistant Finish: Chrome-plated ball and black powder coat stand up to weather.

Features to know about

Smooths Out the Ride: ShockDrop Technology That Absorbs Road Impact

Every bump and pothole sends stress through your hitch if you’re using a standard metal-on-metal setup. The Curt RockerBall built into this mount uses ShockDrop technology with cushioned polyurethane isolators that compress under load, cutting down vibration and rattling. That means less shock transferred to your truck and trailer, a smoother ride, and reduced strain on your suspension and brakes.

Keeps Your Trailer Level: 2" Drop or 2" Rise

Matching your trailer height makes for safer, steadier towing. This ball mount provides a 2" drop or a 2" rise so you can dial in the right angle for level towing. With a 7-1/2" length from the center of the hitch pin hole to the center of the ball hole, it gives you dependable clearance while keeping your trailer tracking straight.

Built to Tow Strong: 7,500 lbs GTW, 750 lbs TW

When you’re pulling serious weight, the last thing you want is weak gear. This forged steel setup is rated for 7,500 lbs gross towing weight and 750 lbs tongue weight, giving you dependable strength for mid-size campers, boats, or equipment trailers. The anti-swivel base keeps connection points tight and solid for steady towing every time.

Reduces Sway and Noise: Integrated Sway Control Tab

Keeping sway in check makes towing more predictable. The built-in sway control tab gives you an attachment point for a friction sway control system (sold separately), helping calm trailer movement when crosswinds or passing trucks push against your rig. It’s a simple way to add stability without changing out your whole setup.

CURT adjustable trailer ball mount with sway control tab and 2-inch shank for towing setup

Curt adjustable trailer ball mount with 2-inch shank and sway control tab compatible with 2-5/16 inch RockerBall hitch ball

Fights Corrosion for the Long Haul: Durable Chrome and Powder Coat Finish

Towing gear takes plenty of abuse from weather and road grime. This RockerBall mount combines a chrome-plated ball with a carbide black powder coat finish on the mount to resist rust and wear. It’s virtually maintenance-free, with a built-in grease zerk so you can keep the isolator core lubricated for quiet operation 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: 2-5/16"
  • Ball mount length: 7-1/2" from center of hitch pin hole to center of ball hole
  • Distance from center of ball hole to center of sway control ball hole: 5-1/2"
  • Drop: 2" from top of inside of hitch opening to top of ball mount platform
  • 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.

Cutaway showing Curt RockerBall hitch ball construction with forged steel body and shock-absorbing polyurethane core

Curt RockerBall with ShockDrop technology diagram showing shock-absorbing compression and vibration reduction during towing

Curt RockerBall close-up showing built-in grease zerk fitting for easy lubrication and maintenance

45149 Curt Rocker Ball 2-5/16" Shock Absorbing Hitch Ball and Ball Mount w/ Sway Control Tab - 7,500 lbs

Installation Details C45WR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.8

19 reviews
Review sort icon
Curt RockerBall with ShockDrop technology provides comfort and control while towing. Includes corrosion-resistant, black powder coated ball mount. Built-in bracket lets you mount a sway control ball for installation of a friction sway control system.

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Great product



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Used you before just like always excell ent



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Delivered as ordered. I was uncertain that the ball was the right size, pleased to find out it was. Yea!



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No more hard knock on slow downs or quick starts. Great product



by:

Great hitch, well designed



by:

Everything from ordering to delivery was great



by:

The RockerBall is great. Only issue is that it won't work with the Ball Mount w/Sway control that was shipped with it.
May have to return both items if a fix isn't available.

Jenny N. profile picture

Jenny N.

8/15/2022

I checked our stock in our warehouse and they were flat. I will have our customer service team reach out to you.



by:

The customer support I received pre-sale was outstanding. I had a lot of questions after I bought my new trailer and the etrailer rep was incredibly helpful. The ball mount is solid manufacturing. Fits the receiver and my sway bar perfectly.



by:

Everything I buy from Etrailer is always what I expected to receive. Haven’t tried hitch yet but I know it Will accomplish what I need it to. Just surprised I received all in one piece sent it was shipped USPS. Came to Alabama, sent up to Pa. Then back to Me in Alabama. Box was shedded but everything was still in it. This has happen several other times as well! Lol

Jhs profile picture

Jhs

7/13/2024

Good as expected



by:

Great product. Easy install. Combined with Curt sway control bar and wireless brake control, have had no issues with 21' trailer sway diving across the country.


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Condition: Installed

Notes: Item has been installed/test fit.

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Jonathan Y
Video by:
Jonathan Y
Employee Kevin C
Installed by:
Kevin C

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