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Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson

Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson

Item # DL21754

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Boat Trailer Parts DL21754 - Black Rubber - Dutton-Lainson
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  • Roller and Bunk Parts
  • Rollers
  • Roller Bunk
  • 4 Feet Long
  • Black Rubber
  • Dutton-Lainson
  • 2500 lbs Capacity
Dutton-Lainson standard roller bunks - 4' long, for boat trailers. Call 800-298-8924 to order Dutton-Lainson boat trailer parts part number DL21754 or order online at Free expert support on all Dutton-Lainson products. Guaranteed Lowest Price and Fastest Shipping for Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson. Boat Trailer Parts reviews from real customers.

  • All Info
  • Reviews (21)
  • Q & A (27)
  • Videos (1)
  • Photos
  • Why etrailer?

Dutton-Lainson Boat Trailer Parts - DL21754

Dutton-Lainson standard roller bunks - 4' long, for boat trailers.


  • Quick, easy, and inexpensive way to upgrade bunk-style trailers to rollers
  • Durable, wear resistant inner surface
  • Soft boat-cushioning outer surface
  • Attaches directly to vertically mounted 2" x 4" bunk board, mounting bracket, or optional roller bunk bracket (sold separately)
  • Rollers free to pivot and align with boat hull
  • Constructed of 14 gauge steel
    • Black powder coat finish
  • Made in the USA


  • 2,500 lb. Boat capacity
  • Each roller 4' long
  • 10 Sets of 2 rollers

21754 Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson

Video of Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Dutton-Lainson Boat Trailer Parts - Roller and Bunk Parts - DL21754 Review

Today were going to review part number DL21754. This is the Dutton-Lainson Boat Trailer Standard Roller Bunk which is four foot long. These Dutton-Lainson Roller Bunks will provide a quick, easy and inexpensive way to upgrade your bunk-style trailers to rollers. They feature a special non-marking roller with a durable wear-resistant inner surface and a soft boat cushioning outer surfaced. This design can be mounted directly to the top of your existing wooden bunks. It is recommended if you do that to use a stainless steel mounting screws.

Itll help in the corrosion resistance. Now also, if you wanted to remove the wooden bunks on your trailer, you can use the optional roller bunk bracket which is part number DL21762 and thats what installs if you remove your wooden roller bunks. Basically, this roller bunk has pre-drilled holes in it so if you go to install this on your regular roller bunk, wooden bunk, you just lay this on top, mark your holes and drill it through and then bolt it to the wooden bunk. If you dont have the wooden bunks or you want to remove the wooden bunks then you can still use these holes but you just use this bunk bracket and basically what that is, it will sit in here and the bolt will go through here and then you can use this bracket to attach it to your trailer with these adjustable slided holes on it. It is recommended to use two of these brackets for each roller bunk.

So in this case, with the two, you will need four brackets. This part is constructed of a 14-gauge steel and has a black powder-coat finish. The rollers on it are free to pivot and they roll to help align with the boat hull. Comes with two rollers and theres five sets for each four foot length so thatd be 10 rollers on each one. And on this part number, you get actually two four-foot bunk rollers.

So that would be 10 sets of two rollers. The combined weight capacity of these two bunk rollers is 2500 pound boat capacity, weight capacity. And again, each roller bunk is four foot long and two inches wide. This part is made in the USA. That should do it for review on part number DL21754.


Customer Reviews

Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson - DL21754

Average Customer Rating:  4.8 out of 5 stars   (21 Customer Reviews)

Dutton-Lainson standard roller bunks - 4' long, for boat trailers.

- DL21754


The roller bunks seem to be as represented. They appear to be well made of heavy steel and are nicely finished. Brief but suitable installation instructions and suggestions were included. Though they only arrived yesterday and have not yet been installed, I am expecting years of use out of therm. Three stars only because I have not yet installed or used them. If they perform the way I think they will it will be worth another star or two. 302257

- DL21754


With a little trailer modification that only took about an hour, so far they look and work great. Have not launched in water yet but reloaded the boat from dry ground with no problems. I would highly recommend this product. 88010


Its still working great. The only thing that would improve would be to install an electric winch.

David B - 07/23/2014


- DL21754


I did not use the product for converting a bunk trailer, although it would be an easy conversion. The rollers pivot to adjust to the boats hull which is cool. (I did not realize this when ordering) I made a parking spot for an old fishing boat to get it out of the water yet still right by shore for easy use. The product worked better than I expected for my plan. 214343

- DL21754


Replaced the bunk boards and could not believe how much easier it is to launch my boat. Most of the lakes i fish in WA state are very shallow and with these rollers i don't need to back my truck in the water to launch my boat. Very Pleased. 357165

- DL21754


Product fits my trailer needs perfectly. It was just as advertised, and the product videos and responses to other writers were very helpful in guiding my decision. I installed the Roller bunks as soon as received and placed them right in service. My hovercraft rides perfectly on them. 137262

- DL21754


excellent product, delivered on time as promised. It is good to. do business with you. 546694

- DL21754


Speedy delivery. Somewhat easy to install. Will see how they work and hold up this spring. 600282

- DL21754



- DL21754


Worked perfect for the hot tub Needed a shelf for the cover that I could push on and off by myself 371301

- DL21754


The rollers were delivered on time with no damage to the packaging. I've yet to install them but they are sturdier than I thought they'd be. I'll amend this review after I install them and use them but right now I'm impressed. 368561


I have a small 15 aluminum boat that when loaded weighs about 450 lbs. I used a set of these rollers as a one for one replacement for bunks. I was looking for something to make loading the boat easier as Im partially disabled. Best thing I could have done! Great rollers!!! Just be careful launching the boat and dont disconnect the boat until the trailer is in deep enough water to float the boat as it slides off too easy!!! Best mod Ive done to my boat trailer.

Dan S - 04/17/2018


- DL21754


Exactly as pictured. Installed this weekend, works great so far. Dealing with etrailer was a breeze. Quick to ship, great packing job, couldn't ask for better! 362003

- DL21754


These roller bunks help me load my boat a lot easier. I guess I was just getting too old to crank it on using the old carpet covered bunks. 322880

- DL21754


just what i was looking for. 218494

- DL21754


Extremely happy with product. Installation went very well. 216978

- DL21754


Recieved merchandise quickly. 214316

- DL21754


very sturdy, made well 133160

- DL21754


made well,easy to put on the trailer,boat loades easy 86626

- DL21754


Excellent product and more than I expec ted 57301

- DL21754


Very prompt service. The Bunk Rollers were perfect for my trailer. Also very good quality. Will buy again. 54381

- DL21754


Product was as presented, shipped quickly, notified often on shipping. Received sooner than expected. 45736

- DL21754


Right stuff, fast shipping and good pr ices. 6170


Ask the Experts about this Dutton-Lainson Boat Trailer Parts
Do you have a question about this Boat Trailer Part?

  • Recommendations for Boat Trailer Roller Bunks for a 2400 Pound Boat
  • First off, there may be a solution to the bunks not aligning with the hull. With the Dutton-Lainson roller bunks we offer, you can also get Boat Trailer Roller Bunk Bracket for Dutton-Lainson Roller Bunks, # DL21762, for the pivoting black steel roller bunks, or # DL21742, for the galvanized. These brackets allow the roller bunks to be adjusted vertically from the trailer and angled to cradle the boat hull. Neither galvanized roller bunks, # DL21741, and # DL21740, will pivot. But both...
    view full answer...

  • Roller Bunk # DL21754 Recommendation for a Flatbed Trailer Converted to a Part-time Boat Trailer
  • Yes, I would recommend you get Boat Trailer Standard Roller Bunk, part # DL21754, for hauling your boat that weighs 235 lbs in your flatbed trailer. These are sold in 4 foot sections and should work well for you once installed. You may be interested in Boat Trailer Roller Bunk Bracket # DL21762 for when you install the roller bunks in your trailer.
    view full answer...

  • Should Nuts and Bolts or Screws Be Used to Mount Dutton-Lainson 4-Foot Roller Bunk
  • The Dutton-Lainson 4-Foot Roller Bunks, part # DL21754, can be mounted directly to the 2 x 4 bunk boards on your trailer using hardware of your choosing. My contact at Dutton-Lainson advised that the choice of nuts and bolts versus screws is not critical so long as the rollers are firmly secured. I took a few measurements of this part for your reference and to help you select hardware. These measurements are shown on the attached photo. The interior channel for mounting the roller bunks...
    view full answer...

  • Recommendations for Bunk Rollers for Jet-Ski Trailer
  • Bunk rollers like the # DL21754 you mentioned would be an excellent choice for PWC's that rest on the edges of the bunks, as most of them do. At 4 foot long, they'd probably offer plenty of support, but I'd recommend getting a set that's close in length to your existing bunk boards. A 5 foot long set is also available as part # DL21755. The rollers would simply mount right over the edge of your existing bunk boards, but you'll probably need to remove the carpet from them first. The rollers...
    view full answer...

  • Roller Bunk Recommendation For Bear Trailer With CCJ G3 Jon Boat
  • Since you said the bunks on your trailer are 8 ft long, I recommend two sets of part # DL21754, which are 4 ft long and attach them end to end to your bunks, which would cover the 8 ft span your current bunks measure. If you wish to remove the bunks you currently have you could use a bracket like part # DL21762 to attach the roller bunks directly to the trailer frame. These are sold individually and 4 are needed to mount a pair of roller bunks. If you choose to use two sets of rollers,...
    view full answer...

  • Availability of 10 Foot Long Boat Trailer Roller Bunks
  • Dutton-Lainson doesn't manufacture a 9 foot long roller bunk, however you could use two 5 foot roller bunks per each side part # DL21755, for a total of four. The small bit of extra length won't hurt anything. Each 5 foot section has a 3000 lb capacity. The rollers of the 4 foot roller bunk # D21754 are about 9-1/2 inches apart. If you used two of them and spaced the two units about 9-1/2 inches apart to keep a consistent distance between rollers, you'd get good coverage on a 9 foot...
    view full answer...

  • What Size Roller Bunks for 16 DLX Carolina Skiff Boat Trailer
  • I checked with Carolina Skiff and they were able to give me the trailer specifications for the size 1655 DLX. They recommend that you use 2" x 6" wood, carpet-covered bunks that are 10' 6" long spaced 40" apart when measuring from the outside edge of the bunks. They also require that the front end of the bottom bunk extend past the flat bottom of the boat. If you'd like to stick with the wooden bunks they recommend, we do sell the marine grade carpeting in the 18" width, # CE11349. If...
    view full answer...

  • How to Install the Boat Trailer Roller Bunk Bracket # DL21762
  • The Boat Trailer Roller Bunk Bracket # DL21762 will secure to the Roller Bunk by hooking around the bolt underneath the rollers. The slot in the bracket will be bolted to your trailer or your existing wooden bunks. The slot in the bracket allows it to be adjusted higher and lower on the bolts. These brackets are designed to work with the 4 foot # DL21754 and 5 foot # DL21755 Roller Bunks by Dutton Lainson.
    view full answer...

  • Are Longer Axles Available For Single Axle Pontoon Boat Trailer
  • I did some research on your 1994 Sylvan Pontoon boat and found that the beam is 8-ft. The pontoon boat trailers I was able to find information on said the distance between the center of the bunks for a boat with an 8-ft beam are spaced 72 inches apart. I have attached a photo that shows how the bunks are placed under the pontoons. If your trailer frame is wide enough to be able to place the bunks with those dimensions then you would not need to try and extend the axles. You may want...
    view full answer...

  • Roller Bunk Bracket # DL21762 Recommendation
  • For a roller bunk bracket designed for roller bunks you would want a Boat Trailer Roller Bunk Bracket # DL21742. If you wanted a set of roller bunks for this bracket I would recommend the Boat Trailer Standard Roller Bunk # DL21754. I spoke to my contact at Dutton-Lainson and he informed me that the Slotted Bunk Bracket # DL21584 that you referenced was designed to work on wooden bunks and would not be recommended for a roller setup.
    view full answer...

  • How Many Roller Bunks Needed for a Boat Trailer
  • If I am understanding you correctly it sounds like you are saying you have 2 12-foot bunks and 2 6-foot bunks. For the 12 foot bunks you would want to get 3 sets of 4 foot long bunks. So that would be 3 of the Dutton Lainson Bunks part # DL21754. For the 5 foot long bunk I would recommend you go with the bunk part # DL21755 that you referenced.
    view full answer...

  • Availability of Replacement Rollers for Dutton-Lainson Roller Bunk Part # DL21754
  • Replacement rollers for the Dutton-Lainson Standard Roller Bunks you mentioned, part # DL21754 are available. The replacement roller is part # DL203228. You can see current pricing information by using the provided link that will take you to the product description page. The rollers are held in place by a bolt that runs through the rollers, so replacement would be a simple process.
    view full answer...

  • Can Bunk Rollers Act As Guide-Ons on a Boat Trailer
  • The # DL21754 Bunk Rollers you mentioned are designed to be mounted onto the narrow end of a 2 x 4 bunk board. If your bunks are turned so that the side of the bunk is in contact with the boat's hull, use the # DL21741 rollers, which would bolt directly to the long side of a 2 x 4 trailer bunk. I used roller bunks on my PWC trailer, and they work incredibly well. Just make sure that you use enough bunk roller units to cover the weight of your boat. For instance, the # DL21754 you referred...
    view full answer...

  • Custom Lawn Roller Compatibility Using Boat Rollers To Be Used Behind Mower
  • To use the Yates Ribbed Wobble Roller - Heavy-Duty Rubber - 5" Diameter - 1-1/8" Shaft # YR530R-9P for your application, you may want to add the 1-1/8 inch bearings you mentioned and put them on a rod. I've attached a photo of that bearing in the roller wheel. The only other thing I can think of is using a few of the Boat Trailer Standard Roller Bunk - 4' Long- 10 Sets of 2 Rollers - by Dutton-Lainson # DL21754 to create a 4 foot long roller deck you could add weight to the top of....
    view full answer...

  • Weight Capacity of Ribbed Rocker Roller from Dutton-Lainson
  • I spoke with the manufacturer and there is not a specific weight rating for the individual rollers. It would depend how they are mounted and how the load is dispersed. If you set them up in a bunk fashion, you would probably have about the same weight rating as the Dutton-Lainson Roller bunks like part # DL21754. There is no guarantee they will have the same weight rating as it sounds like you will be building them differently, so only use the bunk ratings as an approximation.
    view full answer...

  • Available Lengths of Boat Trailer Roller Bunks
  • The only roller bunks we carry, see link, come in 4 and 5 foot lengths. They can be cut to the lengths needed though. So for example if you needed a 9 foot section you could get 2 of the 5 foot models and cut off 12 inches of one to get 9 feet. For a 6 foot section you could buy three 4-foot sections # DL21754 and cut one in half so you would end up with 6 feet on each side.
    view full answer...

  • Can Dutton-Lainson # DL21754 Roller Bunks Be Used Without Bunk Boards
  • In order to achieve their 2500 lb weight capacity, the Dutton-Lainson # DL21754 roller bunks need to be installed to the narrow edge of a 2 x 4 piece of lumber. If the roller assemblies aren't mounted to boards, the weight capacity would be unknown. Granted, a PWC isn't likely to weigh more than 1000 lbs, probably less but because the rollers weren't tested without bunk boards it would be impossible to say how much their capacity would be reduced. I'd recommend simply replacing the bunk...
    view full answer...

  • Width of Dutton Lainson Roller Bunk Rollers
  • I spoke with the Dutton-Lainson Engineering department, and the rollers are 5 inches wide, outside to outside on the double rollers like the # DL21754. I attached a picture of the dimensions of the triple rollers too which is oddly narrower.
    view full answer...

  • Replacement Roller Recommendation for Roller Bunk DL21754
  • For the Dutton Lainson Roller bunks part # DL21754 we have replacement rollers. For that you would want the part # DL203228. I attached a review video for this roller for you to check out as well.
    view full answer...

  • Can Additional Mounting Holes be Drilled in Boat Trailer Standard Roller Bunk # DL21754
  • As long as the additional holes you drill in the Boat Trailer Standard Roller Bunk # DL21754 are on the sides of that cradle the piece of wood like you mentioned you'd be totally fine.
    view full answer...

  • How Wide is Channel of Boat Trailer Standard Roller Bunk # DL21754 that Installs on Board
  • The roller bunks part # DL21754 are designed to fit on the end of a 2x4 board so the width of the channel is 1-1/2 inches.
    view full answer...

  • Recommended Roller Bunks for 600 lbs. Boat
  • The Dutton-Lainson Boat Trailer Standard Roller Bunk # DL21754 has a combined weight capacity of 2500 lbs. for both bunk rollers. They can be mounted right on top of wooden bunks. Also, if you 'd like to remove the wooden bunks that are likely on your current trailer you will need the brackets # DL21762. You will need 4 brackets to mount the two roller bunks. I've attached the review video of the roller bunks for you to look at.
    view full answer...

  • Is the Boat Trailer Standard Roller Bunks # DL21754 Sold Individually or in Pairs
  • The Boat Trailer Standard Roller Bunks # DL21754 that you referenced are sold in pairs. I attached a review video for this product for you to check out for more info and to see that it comes with two.
    view full answer...

  • Replacement Rollers For 1965 Vintage Boat Trailer
  • We do have some of the replacement rollers that will work for your vintage 1965 boat trailer, but we do not have some of the rollers you asked about. Thank you for the dimensions. For the very front keel roller I recommend part # YR5213-5. This measures 5 inches long and works with a 5/8 inch diameter shaft. The three center rollers I recommend are part # YR5203-5. These are also 5 inches long and fit a 5/8 inch shaft. We do offer bunk rollers and you can take a look at part # DL21754....
    view full answer...

  • Solution For Allowing Boat Trailer to Winch In Easier
  • The simplest solution may be to install roller bunks on the trailer to help you winch the boat in easier instead of using an electric winch for such a small boat. For a 4 foot long roller bunk we have the part # DL21754 which would be a great option. If you were to use the winch part # DL25200 it would mount to the same mount that your trailer has for it's current winch.
    view full answer...

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Info for this part was:

Expert Research:
Michael L
Expert Research:
Robert G
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
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