How to Know Correct Hitch Ball Diameter for Coupler on 4300-lb Keystone Springdale Travel Trailer

Updated 03/07/2018 | Published 03/06/2018

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2" Hitch Ball - 5/8" Diameter x 1-5/8" Long Shank - Steel

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2" Hitch Ball - 1-1/4" Diameter x 2-5/8" Long Shank - Chrome - 10,000

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Question:

We are buying a travel trialer need to know what ball size we need for a 27x8 springdale travel trialer Weight of trialer is 4,356

asked by: Nancy

Expert Reply:

Travel trailers in the weight range of your 4300-lb Keystone Springdale will typically have a 2-inch ball coupler, but since there are many models in this series with widely varying weights your best bet is simply to look at the coupler housing. The coupler's weight rating and compatible hitch ball size will be stamped into the housing.

There are three common hitch ball sizes in use in the RV world: 1-7/8-inch, 2-inch and 2-5/16-inch. As you would expect the larger balls have higher weight capacities. 2-inch balls can be rated from a low of 2000-lbs as with # CB-20Z up to and above 10,000-lbs, as with # A-90.

Apart from the ball diameter you also need to match the diameter and length of the hitch ball's threaded shank to the specific ball mount you are using with it. The diameter of the shank must match the diameter of the hole in the ball mount.

The two linked articles on hitch balls may be of interest to you.

expert reply by: Adam R