A ball mount is a metal tube or bar that inserts into the receiver hitch and provides a mounting plate to hold a trailer ball. Ball mounts are made in a variety of styles and capacities to accommodate different trailers and coupler heights. The right ball mount should have a shank size that matches the receiver tube opening of your hitch, a weight rating that meets or exceeds your gross trailer weight and a rise or drop to help level your trailer.
Determining Drop & Rise
To find the measurement of drop or rise for your tow vehicle and trailer, you will need to measure the receiver tube height (A) and the coupler height (B). B minus A equals C, the drop or rise needed. If C is a positive number, your ball mount will need to have rise. If C is negative, your ball mount will need drop.
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