A trailer hitch ball is bolted to your hitch's ball mount and provides the attachment point for your trailer's coupler. The ball allows the trailer to pivot to provide smooth turning while towing. Trailer hitch balls are sold in various shank lengths and diameters, ball diameters and weight capacities to meet your towing needs.Learn more about the following hitch ball topics:
Choose a Hitch Ball to Fit Your Trailer and Ball Mount
To choose the right hitch ball for your application, there are a few things you need to consider.
Trailer Coupler Diameter and Capacity
Most trailers list hitch ball size (diameter) and maximum towing capacity on the tongue, coupler, or frame. Your hitch ball diameter and capacity should match or exceed those listed on the coupler. The most common hitch ball diameters are: 1-7/8", 2", and 2-5/16".
Pictured above: A trailer hitch coupler with its diameter and capacity listed. Your hitch ball should match these specifications; therefore, you should use a 2" hitch ball with a capacity of at least 3,500 lbs. Pictured above: A trailer hitch ball with its diameter and weight capacity listed. This ball would be appropriate for use with our 2" coupler.
Hitch ball specifications by diameter:
1-7/8" Diameter
Capacity: 2k - 16k lbs
2" Diameter
Capacity: 2k - 30k lbs
2-5/16" Diameter
Capacity: 6k - 38k lbs
Hitch-Ball Shank Dimensions
Not only must the hitch ball fit your trailer, it also must fit your ball mount. Ball mounts have a platform that has a hole in it to receive the ball. The ball has a threaded shank that allows you to bolt the ball to the ball mount. (Most balls also come with a lock washer and bolt for attaching the ball.)
Ball mounts vary in the thickness of the platform and the diameter of the hole. To fit different ball mounts, balls are available in a variety of shank lengths and diameters. Ball mounts do not usually list these two values, so you will have to measure. Common diameters are 3/4", 1", and 1-1/4", but there are a few balls available in several less common sizes. Once you know the diameter of the mounting hole in the ball mount, choose a ball shank diameter of the same size.
Hint: When choosing shank length, consider that the shank must not only pass through the ball mount, but it will have a lock washer and nut on the end. To ensure safety, the shank should extend past the nut by at least 1 thread.
Recommended Torque Values for Attaching a Hitch Ball
3/4" Shank Diameter: 150 ft-lb
1" Shank Diameter: 250 ft-lb
1-1/4" Shank Diameter: 450 ft-lb
Hitch Ball Construction
Hitch balls are made of several different materials and finishes, each with its own advantages and disadvantages.
Chrome
Steel ball with chrome coating
Popular
Economical
Chrome can wear off and allow rust to form
Stainless Steel
Rustproof material stands up well to water and salt exposure
More expensive than most other kinds of hitch balls
Zinc
Steel ball with zinc coating
Corrosion-resistant finish stands up well to water and salt exposure
Cost less than stainless steel hitch balls
Raw Steel
Heat treated or forged steel for superior strength
Heavy-duty use
May be machined
Nickel
Steel ball with nickel coating
Corrosion resistant finish
Non-magnetic
Plating method is less harmful to the environment than chrome electroplating
There is an error in your "shank diameter" graphics. The last one indicates a 2 5/16" shank diameter. That should be either 1" or 1.25" shank diameter... Otherwise, a good article.
@JRTJH Thank you for your interest. We strive to have accurate and up-to-date informatin in our guides. Can you be more specific what area you are referring to please.
Curt hitch ball #40038 has a 1 inch diameter shank. For Curt balls with 3/4 or 1 inch diameter shanks you would use wrench #C20001. The nut on that ball should use the 1-1/2 inch end of the wrench. You could also use a large crescent wrench if you…
You can have a 2-5/16 inch hitch ball on either a 1 inch or 1-1/4 inch shank. The nut on a hitch ball with a 1-1/4 inch shank takes a wrench with a 1-7/8 inch socket. A hitch ball with a 1 inch shank will take a wrench with a 1-1/2 inch socket. You…
Most of the 2-5/16 inch hitch balls will use either a 1-inch diameter shank or 1-1/4 inch diameter shank. The nut size on a hitch ball with a 1-1/4 inch shank, like the Tow Ready 2-5/16 Inch Hitch Ball, part #19286, will use a 1-7/8 inch socket. A…
So long as the trailer hitch on your tow vehicle - in your case the Cayenne - is rated for weight distribution the tow vehicle won't matter for the weight distribution hitch. In order to choose the best weight distribution system you will…
To secure both the shank and ball platform portions of the MaxxTow Adjustable-Height Ball Mount MT70067 to your RV you can use two of our Hitch Receiver Locks #e98881. The #e98881 provides an extra wide center span of 3-5/8-inches, which is more…
The #e98881 lock you referenced is a fit for Class III, IV and V hitches. It is intended for use as a hitch lock, to deter theft of a ball mount or other hitch mounted accessory. The receiver tube of a Class V hitch is typically about 3-1/2 inches…
Thank you for providing a photo of your trailer coupler. Trailers should always be level when hitched. If a trailer is out of level when towed it will tend to have more sway. I notice you have weight distribution (WD) lift brackets on your trailer…
Normally trailer coupler height is around 17 inches, from the ground to the bottom of the coupler, and most hitch manufacturers design their hitches to work with a ball mount that will end up very close to this measurement. I am including a link to…
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The Dexter #DX27FR brake actuator would work great for a tandem axle trailer with drum brakes. We don't offer the mounting bolts, but you could source the grade 5 1/2 inch bolts locally. I've linked to a product description video for…
The Dexter #DX27FR would make a good replacement for trailers weighing less than 7500 lbs. The coupler is compatible with a 2 inch trailer ball, so if your trailer meets those criteria, the #DX27FR would be an excellent choice. UFP is now owned by…
Jrtjh
10/6/2021
There is an error in your "shank diameter" graphics. The last one indicates a 2 5/16" shank diameter. That should be either 1" or 1.25" shank diameter... Otherwise, a good article.