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How To Choose The Correct Trailer Ball

Written by hitchweb Team
Tuesday, December 13, 2011 — 3 Comments

Trailer Ball Diameter, Length and Shank Diameter

What Do I Need To Consider When Choosing A Hitch Ball?

A trailer hitch ball is the towing accessory that attaches to the ball mount and provides the connection from the trailer hitch to the trailer. The trailer ball is gripped by the coupler and held into place on the trailer's frame. Trailer hitch balls are sold in different ball sizes, shank lengths, diameters and capacities.

Trailer Ball Diameter:
The ball size is determined by the size of the trailer coupler.

Trailer Ball Shank Size:
The ball mount determines the ball shank (hole that ball goes into) diameter and ball shank length. The shank sizes are determined by the class of trailer hitch you have.

  • Class I & II: 3/4" Diameter

  • Class III & IV: 1" Diameter

  • Class IV & V: 1.25" Diameter

Trailer Ball Capacity:
The weight rating of the hitch ball should be equal to the weight rating of your trailer hitch and ball mount.

What types of trailer balls are available?

  • Standard Chrome Trailer Balls

  • Specialty Trailer Balls

  • Packaged Trailer Balls

  • Combo Balls

How to choose the correct trailer ball

View our selection of Trailer Balls and trailer ball covers

We hope this article could be of great help to you, please don't hesitate to leave a comment on this post if there are any questions we didn't cover.

Posted in Towing 101


Friday, April 8, 2016

Hi Greg, here's the trailer ball that would be included, part 63840 2-5/16" trailer ball.

Make sure to add the ball to your cart and apply the coupon code WDBALL for the free ball.

The Weight Distribution promo expires April 15th 2013.

Feel free to contact us with any questions 800-300-4067

Deanna R. Jones
Monday, May 11, 2015

Thanks for the information! I'm borrowing my uncle's trailer, but I forgot to ask for the hitch ball. I need to buy a new one before I take it out on the road tomorrow, but I don't know how to choose the right size. The information for the trailer ball diameter is very helpful. I'll be sure to look up the size of the trailer coupler before determining the ball size that I need to buy.

Greg Topuzoglu
Friday, March 15, 2013

which ball comes free with the WDH offer promo code WDBALL?

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