Mounting Hole Measurements For The Lock N Roll Articulating Flat Mount Trailer Coupler LR77FR
Updated 04/03/2026 | Published 03/29/2026
Question:
can you send me the measurements for the holes please. I am replacing another hitch and want to see if the 4 holes will line up or we need to drill new ones through the trailer frame.
asked by: Kieran B
Helpful Expert Reply:
Hi Kieran!
I can definitely get you measurements for the Lock N Roll Articulating Flat Mount Trailer Coupler - Trailer Side - 10,000 lbs # LR77FR. The whole plate measures 3-1/4" x 9" and when measuring center to center, I got 2-1/8" for the closer holes and 7-1/4" for the longer holes. I probably did a poor job of explaining that, so I have a quick diagram attached as well. Just don't judge it too hard, I am definitely not an artist.
What kind of trailer are you wanting to put this on? Most tend to do some kind of off roading set up with them, but have seen people do different things a few times.
(click to enlarge)
Product Page this Question was Asked From
Lock N Roll Articulating Flat Mount Trailer Coupler - Trailer Side - 10,000 lbs
- Accessories and Parts
- Trailer Hitch Ball Mount
- Hitch Mounted Coupler
- Lock N Roll
more information >
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Kieran B.
4/3/2026
Thank you so much this is exactly what I'm looking for. It's for an overlanding trailer.