Will CE Smith Post-Style Guide-Ons CE27620 Fit Narrow Channel Frame

Updated 05/04/2026 | Published 08/27/2021

Question:

On my boat trailer I have 1-1/4 width by 3 inch tall channel iron and Im wondering if the u bolts will fit correctly?

asked by: Scott C

Expert Reply:

That's a good question, and yes, the U-bolts will fit your 3" x 1-1/4" channel frame for the CE Smith guide-ons you asked about, which are the following part number:

- CE Smith Post-Style Guide-Ons for Boat Trailers # CE27620

I have added a cut out for you from the directions which shows how you'll want to orient the U-bolts for your narrow frame.

expert reply by: Kyle S

U-Bolt Orientation For Narrow Channel Frame
(click to enlarge)

Tom M.

5/4/2026

My c-channel frame is 1.5" x 3 5/8", and I could not find a way to fit the narrow width without a gap on one side of the u-bolts or the other. Despite tightening the nuts a lot I could still put weight on the bunk and move it. In order to "fix" it I shimmed the gap with a piece of 1/2" plywood. To do it "right" I think you'd need smaller u-bolts and corresponding holes in the right places on the brackets.