Converting Boat Trailer From Rollers to Bunk Boards

Question

Question:

I have an older 18’ Mirrorcraft boat with a 115 HO motor. It has a roller trailer that I would like to convert to a bunk trailer. What do I need to do this?

asked by: Tim R

0

Expert Reply:

Hi Tim; to convert your boat trailer from roller bunks to bunk boards all you need are the bunk boards and brackets to mount them. You will need to measure the roller bunks you have and get the same length of bunk boards:

- 7 Feet: CE Smith Carpeted Bunk Boards for Boat Trailers # CE27845

- 6 Feet: CE Smith Carpeted Bunk Boards for Boat Trailers # CE27840

- 5 Feet: CE Smith Carpeted Bunk Boards for Boat Trailers # CE27820

For brackets you can use the CE Smith Bolster and Swivel Bracket Assemblies - 9" # CE10000G-4 or 11" # CE10001G-4 with CE Smith U-Bolts # CE15283GA-4.

expert reply by: Robin H

0

Robin H.

2/3/2026

Hey Tim, how did the switch from roller bunks to the carpeted bunk boards go on your Mirrorcraft trailer? Your update could make it easier for others thinking about the same conversion.

Answer 1

There is only a single difference between the two 3,500 lb Kodiak disc brake hub and rotor kits you asked about, and that's the protection given to the calipers. - KodaGuard-Coated Cast Iron Calipers: Kodiak Disc Brakes #KOD59FR - Dacromet-Plated…

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Answer 2

CE Smith wobble roller set #CE29210 is listed as a direct replacement for the OEM rollers on LoadRite trailers as well as several other makes. These rollers fit 3/4 inch and 1-1/8 inch roller shafts. they have a diameter of 5 inches and are 3 inches…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 5

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 8

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 11

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 12

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Converting Boat Trailer From Rollers to Bunk Boards

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