Replacement 2-5/16" Ball Coupler For Shelby 5107 Coupler

Updated 02/23/2026 | Published 02/15/2026

Question:

I have a 29’ aluminum frame cargo trailer with a Shelby 5107 bolt on 2” coupler. Would like to switch to a 2 5/16 bolt on coupler, without drilling additional holes. What are my options. 3” wide frame.

asked by: Terry H

Expert Reply:

Hey Terry,

It looks like you have the Shelby 5107 straight tongue with the 3" tongue, is that correct? I'd be happy to figure out which coupler will fit, but I cannot find the bolt hole spacing of your coupler online, so you'll need to measure it to be sure.

The standard 3" tongue coupler # DM13203-52 has the 2-5/16" ball you're wanting, but mounting holes are 3" spaced, 2" spaced, and 1-7/8" spaced as shown below.

If that doesn't match what you have, let me know.

expert reply by: Samuel C