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Boat Trailer Standard Roller Bunks - 5' Long - 12 Sets of 2 Rollers - by Dutton-Lainson

Boat Trailer Standard Roller Bunks - 5' Long - 12 Sets of 2 Rollers - by Dutton-Lainson

Item # DL21755
Our Price: $203.25
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D-L roller bunks provide a quick, easy and inexpensive way to upgrade bunk style trailers to rollers. Attaches directly to vertically mounted 2" x 4" bunk board; mounting bracket, or optional roller bunk bracket (sold separately). 1-800-940-8924 to order Dutton-Lainson boat trailer parts part number DL21755 or order online at Free expert support on all Dutton-Lainson products. Great prices and Fastest Shipping for Boat Trailer Standard Roller Bunks - 5' Long - 12 Sets of 2 Rollers - by Dutton-Lainson. Boat Trailer Parts reviews from real customers.
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Dutton-Lainson Boat Trailer Parts - DL21755

  • Bunks
  • Rollers
  • Roller Bunk
  • Black Rubber
  • Dutton-Lainson

D-L roller bunks provide a quick, easy and inexpensive way to upgrade bunk style trailers to rollers. Attaches directly to vertically mounted 2" x 4" bunk board; mounting bracket, or optional roller bunk bracket (sold separately).


  • Attaches directly to vertically mounted 2" x 4" bunk board; mounting bracket, or optional roller bunk bracket (sold separately)
  • Rollers pivot freely and align with boat hull
    • Durable, wear-resistant inner surface
    • Soft, boat-cushioning outer surface
  • Constructed of 14 gauge steel, black powder coat finish
  • Includes (2) 5" long roller bunks with 6 roller sets on each bunk
  • Made in the USA


  • 3,000-lb Boat capacity
  • Roller bunk dimensions (each):
    • Overall length: 5'
    • Bracket width: 1-3/4"
    • Bracket depth: 4-3/4"
    • Roller width: 3-1/2"

21755 Boat Trailer Standard Roller Bunk - 5' Long - 12 Sets of 2 Rollers - by Dutton-Lainson

Video of Boat Trailer Standard Roller Bunks - 5' Long - 12 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 - DL21755 Review

Today were going to review part number DL21755. This is the Dutton-Lainson Boat Trailer Standard Roller Bunk in five foot long sections. These Dutton-Lainson Roller Bunks will provide a quick, easy and inexpensive way to upgrade your bunk-style trailers to rollers. They feature a non-marking two-compound roller which has a durable wear-resistant inner surface and a soft boat cushioning outer surface. These roller bunks are designed to attach directly to your wooden bunks that are two inches wide on your boat trailer. Basically, you would set this on to your wooden bunk and there are holes right here, pre-drilled that you would just mark and then drill a hole through and then use a bolt to attach it to the wooden bunk.

Now if your boat trailer does not have wooden bunks or you want to remove the wooden bunks, you can still use these. What you have to do is use this roller bunk bracket which is sold separately. Its part number DL21762 and you will need at least two of these for each section. And what these would do is where the bolts would normally go through the wooden bunk, you would just put the section that has the hook part on it right in the hole and then the bolt would gone through here and then with this bracket having the slotted holes, you can adjust it and bolt it to your boat trailer and get the correct height you need. This part is constructed of a 14-gauge steel, has a black powdered-coat finish, has a total weight capacity for both of these roller bunks is 3000 pounds maximum and again they are five feet long and they are two inches wide.

The rollers on them are free to pivot and they will align with the boat hull. Each five foot section will have six sets of two rollers so 12 rollers on five foot section and 12 on another one. So over all for both roller bunks, you would have 12 sets of two rollers. This part is made in the USA. That should do it on a review on part number DL21755.


Customer Satisfaction Score:

Customer Reviews

Boat Trailer Standard Roller Bunks - 5' Long - 12 Sets of 2 Rollers - by Dutton-Lainson - DL21755

Average Customer Rating:  4.7 out of 5 stars   (88 Customer Reviews)

D-L roller bunks provide a quick, easy and inexpensive way to upgrade bunk style trailers to rollers. Attaches directly to vertically mounted 2" x 4" bunk board; mounting bracket, or optional roller bunk bracket (sold separately).


The paint peeled off the steel in months and when I called customer service they wouldn’t stand behind the product. They said they’re not intended to be in water. Seems a poor choice of materials for Boat trailer rollers that are produced to roll your boat into the water??

Etrailer Expert

Heather A.


Jon,Thank you for your review. These boat rollers are made to be in water when getting the boat on and off of the trailer. When they are submerged for long periods of time it can cause some wear on the rollers. A better option would be galvanized rollers such as: part # DL21741 but even then they are susceptible to rust if underwater for long periods of time.


These boat trailer roller bunks worked absolutely perfectly on my jet ski trailer. Very durable, professionally made. Easy to install. Fit like a glove without having to remove the carpet padding on the rails. This company knows what they are doing and for a very reasonable price. A year later and they are still working like I got them yesterday.


Worked great for loading a raft onto our trailer


Excellent product, heavy duty, easy to install, and so far have worked flawlessly for me, great product!


I had carpeted bunks on my trailer and always had problems launching my boat due to the dry carpet, I couldn't always submerge the bunks in the water due to the tide. I decided to try the rollers and Wow, what a difference it makes. Easy Off, and On. I have a flat bottom Scooter and I recommend the rollers for easy launching. The materials used are of good quality and the wheels do not mar the fiberglass bottom. Just be sure keep the boat secured until reaching the water because it will roll off, it's that easy to get the boat off the trailer. Thank you Etrailer, you have a good product.

Big H.


The roller bunks are still working however the metal frames are rusting very badly after 1 yr. If you can make these in galvanized metal you will really have a winner. Ill keep checking back to look for them.


We considered several alternatives for a way to easily move our 15' sailboat out of the water, over our bulkhead and across our dock. The DL21755 roller bunks work perfectly. I can almost move the boat across the dock with one hand. We mounted them on 2x2's that we attached to the dock. We used 2x2's to keep a low profile.

High quality product and the service and prices from etrailer were absolutely fabulous. Rollers arrived in a few days and were packed very securely. We will be doing business again with etrailer!

Thank you

Wayne B.


Yes, all products are as expected.Thank you.


Outstanding customer service!


I bought these hoping I could adapt them as rollers on a floating jetski dock. Took a little ingenuity, but worked like a champ. I can now push my ski off the dock with one hand! Great product.


Terrific product - But be careful at the ramp! Don't release the winch strap from the boat if the ramp is on a slight incline because the rearward weight of the motor will cause the boat to just fly off the trailer into the water. It happened to me the first time I used it since the installation. It was on a river and the boat started to drift away. Lucky for me a local rescue team was there doing some practice and they retrieved the boat for me. Now I attach a spring shackle, with 1/4" rope attached, to the boat clevis before removing the winch hook. I can gently let the boat slide off the trailer and keep it under control with the rope.

I'm 77 and it was getting harder for me to push the boat off of the trailer if the river was low and equally hard to pull it back onto the trailer at the end of the day. Now it is so simple! I just push the boat out into the flow and when it gets to the center of the trailer I just pull up on the rope and center the bottom of the boat over the bunks. The boat easily comes almost all the way up to the rubber "V" bumper on the trailer. Then it is a simple matter to crank the winch and bring the boat up tight against the bumper.


The rails and rollers are a great product and arrived on time. The Bunk Style Guides do not have mounting brackets suitable for mounting on a standard boat trailer from Academy which uses Angle Stock aluminum for their frame. The brackets are only useable on square or rectangular frames. I fabricated my on mounting hardware to install them.


First off I would like to say that I experienced great customer service throughout my recent orders. I knew that some of my products where back ordered, but I was willing to wait for some of them, others they were able to give me suggestions for in stock items and it worked out perfect. As far as this product goes (which I waited for), I greatly dislike giving reviews right after I receive a product and don't have time to see how it will hold up, but this roller bunker installed very easy and once adjusted worked very well. My old roller bunker started to loose it's wheels (many years old). I only wish I was better prepared, in my head I though I was going to lag screw these in from the top (into the wooden bunker) but after I got the boat off I realized they bolted through the wooden bunker, so I quickly ran down the road and got stainless 3/8 x 2.5" bolts, after that it was quick. If they don't last I will make sure to update my review.


Excellent! They look like they will be helpful in launching my boat on a trailer. I could not do so with my current trailer. I think the parts sent will modify my trailer into a useful device. Thank you.

Tim B.


They worked great...but i have sold that boat and trailer since then. I may be interested in getting some wheel bunks for my latest boat.


The rollers are great, BUT it's possible they won't fit over existing wood bunks & brackets. I have a load rite bandit trailer and ran into this issue. The resolution was to remove the wood bunks and brackets / install with new brackets, so figure the additional cost when purchasing.


The rollers exceed expectations. The delivery was quick and without incident. Very satisfied customer


the roller bunk works well. i had to remove the old bunks (were carpeted 2X4 laying flat) and make new rails the width of the roller bunk channel. i couldn't use the old trailer hardware so i had to improvise. tested new setup this past weekend and they worked very well.




I as of yet not installed my rollers, only because of finding the time to do it. I was however very pleased of the fast delivery. As I inspected the product, I was impressed of the quality of assembly. From what I can tell, I will be quite pleased with the end result.

Larry S.


they do fine, but not as well as I had hoped


Works great seems to hold up very well for sitting in fresh water for a year straight. I could not get my wave runner or jet Jon out of the water without them. Great product for a home made ski lift.

Tommy F.


Still working great


This product is very important to me. At 70 years old, loading and unloading my boat by myself can be a chore.
Also, the lakes I fish sometimes have low water levels with unpaved ramps and again roller bunks makes loading and unloading easier.
This product is a godsend!


modified a utility trailer to haul a 15'6" canoe no problem with a couple of keel rollers now it's a easy one-man load and unload good quality parts at great price!


these bunk rollers are a preferred way of allowing your boat to roll on the trailer along with keel rollers instead of a float on. This product is a must for your boat trailer. The one thing I would like to see is that the frame be available in hot dipped galvanized for salt water use.


Great product but even greater customer service.

I ordered a set of these and then realized that I needed to also order a trailer coupler. I was pleasantly surprised to be able to call etrailer on a SUNDAY and find a knowledgeable LIVE body to talk to. I successfully revised my order and received all my items 3 days later!

Great customer service.


works nice.


I bought and old holesclaw trailer and the bunks and rollers needed to be replaced and had everything I needed the quality of the bunks are excellent ,I have nothing but high marks for all the items I have received for


5’ roller bunks were shipped in a larger box that was only 58 1/2” long.. rollers were bent at 44”.. called customer service and they are shipping a new set, unfortunately a project is delayed because of an 1 1/2”. Products appear to be of higher quality, just the way it was shipped may need to be addressed. The box the bunks were in was also in a severe state of disrepair, one end appeared to have been torn open along with several other tears in the back that to have originate from poor handling in the warehouse. I have photos however, they will not upload successfully. I will be happy to email them if needed.

Show More Reviews

See what our Experts say about this Dutton-Lainson Boat Trailer Parts

  • Can Roller Bunks Handle a 3,200 lb Flat Bottom Boat
    Thanks for reaching out again, Mike! Yes, the 5' Long Boat Trailer Standard Roller Bunks # DL21755 will be able to easily handle the weight of your 3,200 lb boat. These have a 3,000 lb rating for the set so when using 2 sets they will be able to handle up to a 6,000 lb boat.
    view full answer...
  • Weight Capacity of Dutton-Lainson Standard Roller Bunks DL21755
    The Dutton-Lainson Standard Roller Bunks # DL21755 have a maximum load capacity of 3000-lbs per set so they will able to handle your 2500-lb Triton bass boat. These can mount directly on 2 x 4 boards using hardware you supply; stainless or galvanized hardware is recommended for corrosion resistance. Part # DL21755 consists of a set of two rollers, each with 6 sets of wheels. You may want to use two sets, to give you 10-feet of roller surface to better support each side of the hull.
    view full answer...
  • How Wide are the Rollers on Dutton-Lainson Roller Bunk Part DL21755
    I spoke with the Dutton-Lainson Engineering department, and the rollers are 5 inches wide, outside to outside.
    view full answer...
  • Will Roller Bunks Cause PWC to Roll Back Into Water
    When using the Boat Trailer Standard Roller Bunk # DL21755 to load your PWC it really depends on how severe of an angle your ramp is at. If it isn't too severe then the weight of the PWC on the rollers won't allow the it to slide back so fast that you can't hook your winch up to it. If the angle is a little more severe then you will need to have a 2nd person near the ramp who can connect the winch when you pull up on the ramp otherwise your PWC will roll backwards.
    view full answer...
  • Is the Boat Trailer Standard Roller Bunk # DL21755 Sold in Pairs
    The Boat Trailer Standard Roller Bunk # DL21755 that you referenced is sold in pairs. If you order a quantity of one we will ship you a pair. I attached a review video for this product for you to check out also.
    view full answer...
  • Can Roller Bunks be Used to Make Boat Ramp
    Roller bunks like the Dutton-Lainson 5 Foot Long # DL21755 that you're looking at are designed to be installed on a boat trailer but there's no particular reason they couldn't also be used to make a ramp. We have indeed had customers do exactly this and I have attached a few pictures they sent in of the finished products. These particular roller bunks feature a 3,000 pound boat capacity and are 5 feet in length. I have included a short video demonstration that you can check out as well...
    view full answer...
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  • Can Pontoon Boat Be Stored On Roller Bunks Over Winter
    I spoke with my contact at Dutton-Lainson about storing your pontoon boat on the # DL21755 roller bunks. They said there is no problem with storing your boat on the roller bunks over the winter. The bunks have a weight capacity of 3,000 pounds, so as long as your boat is under 3,000 pounds these roller bunks will work well for you. The # DL21755 roller bunks will add approximately 2-5/8 inches to the height of the boat when on the trailer. This is important to keep in mind if it is a...
    view full answer...
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  • Will Storing a PWC on Rollers for a Long Period of Time Damage the Hull
    For PWC you can store them on roller bunks. For boats they do not recommend storing on rollers for a long period of time unless wood blocks are used. Otherwise small indentations or cracks can occur on the hull.
    view full answer...
  • Is Keel Roller Required For Use With Dutton-Lainson Boat Trailer Standard Roller Bunks
    Nope, a keel roller is not required in order to use the Dutton-Lainson Boat Trailer Standard Roller Bunks - 5' Long # DL21755.
    view full answer...
  • Can Roller Bunks be Used on 21 Foot Pontoon Boat
    Yes, you can definitely use roller bunks with your 21 foot pontoon boat. Roller bunks have capacities, and while pontoon boats can obviously vary quite a bit in weight, roller bunks with a 3,000 lb boat capacity should be for that size boat. I recommend going with 5' long sections of roller bunk: - Boat Trailer Standard Roller Bunks - 5' Long # DL21755 The # DL21755 will mount directly to a 2" x 4" bunk board as well, so you can install them right on top of your boards, and the rollers...
    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...
  • Placing Boat Bunks for Maximum Contact with Boat with a Ribbed Hull
    The Roller Bunk # DL21755 measures 3-1/2 inches across the wheels where your boat will be sitting. Also, the wheels pivot to help make contact with the bottom of the boat. Since you currently have vertical bunks you'll need the brackets # DL21762 to connect the bunks to your trailer. This will give you the option of adjusting the height and placement of the bunks which means you can decide where on your boat the wheels will make contact with the boat to put them in the best suitable...
    view full answer...
  • Using Roller Bunks on a Boat Ramp for an 18 Foot 78 Sylvan Sport
    We had a customer use roller bunks # DL21741 on a boat ramp he built for this same exact purpose. And it worked out great. Take a look at the pictures I have included. The key is to have enough rollers for the length of the ramp and to support the weight. The roller bunk sets are rated for a maximum of 3,000 pounds. There are 2 bunks in a set, 5 feet long each. You can get them from us and the current pricing is available on the product page.
    view full answer...
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  • Upgrading To an Electric Boat Winch For A Scarab 285 6,000LB Jet Boat
    Yes, the Dutton-Lainson StrongArm Electric Winch # DL25215 will work well with your Scarab 285 Id. It has a load capacity of 3,000lbs. This number does not directly corelate with your Scarab as you are not trying to lift the boat with the winch, you are only pulling it completely onto the trailer when loading. As I see your trailer does use bunk boards you will use the 2-1 ratio for the total weight capacity. This makes the winch capable of loading a 6,000lb boat which is what your Scarab...
    view full answer...
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  • Can the Boat Trailer Standard Roller Bunk Be Used Submerged Under Water On a Boat Ramp
    The Boat Trailer Standard Roller Bunk part # DL21755 is designed to be used on a trailer which although will be frequently submerged in water, would/should not be constantly. I took a look at some reviews of customers using these rollers as a boat ramp where they are constantly submerged and it seems like an issue is the paint wearing faster and the rails thereby rusting. Therefore, the Dutton-Lainson Boat Trailer Deluxe Roller Bunk part # DL21741 which are galvanized will be a better option.
    view full answer...
  • Recommended Roller Bunks for 22' Pontoon Boat Trailer
    There are a lot of great options for roller bunks for your 22' pontoon boat trailer. I've included a link to our selection of roller bunks below. I recommend the Dutton-Lainson Boat Trailer Standard Roller Bunks # DL21755 for their clean look and high weight capacity. These are 5' bunk boards that have 6 sets of 2 rollers along each board and have a weight capacity of 3,000 lbs. They can be attached to your trailer using existing 2' x 4' bunk boards or with the Mounting Brackets # DL21762....
    view full answer...
  • Using Bunk Rollers to Construct a Boat Ramp
    According to Dutton-Lainson, there would be no problem with a PWC sitting on the rollers for an extended period of time (like over the winter). The roller bunks are meant for boats weighing up to 3,000 lbs, and since a PWC will weigh less than 1,000 lbs, there should be no issue whatsoever. The # DL21755 rollers you referenced would work great for what you are wanting to do. These particular rollers are meant to be attached to the edge of a bunk, but there are also sets like part # DL21741...
    view full answer...
  • Roller Bunk Recommendation for a 17 Foot Ranger Jet Boat and King Salt Water Boat Trailer
    The easiest solution, if possible, is to back the trailer further into the water. If that is not an option, rollers could help you and definitely make it easier to launch the boat and pull it back on the trailer. For rollers, given that your bunks are flat and about 8 feet long, I would go with 2 sets of # DL21740. Each piece is 4 feet long and they can be mounted directly to the bunks. Each set of rollers has a 2,500 pound capacity.
    view full answer...
  • Installation of Boat Trailer Standard Roller Bunks 5 Foot # DL21755
    The 5-foot roller bunks # DL21755 can be attached directly to vertically-mounted 2 x 4 bunk board. I would suggest using stainless steel or galvanized hardware. Another option is to use the # DL21762 brackets, 4 brackets are needed to mount a pair of roller bunks. With the brackets, the bunk can be adjusted vertically and can be angled for a custom fit to your boat hull. I have posted a short video showing how the bunks attach to a 2x4 and to one of the brackets for you to review.
    view full answer...
  • Will Using Roller Bunks Make Launching and Loading a Saturn SD430 Boat Easier
    Roller bunks are definitely going to make launching and loading the boat much easier. having carpeted bunks on the trailer now will not be an issue. You can use roller bunk, # DL21741, that can be mounted flat against the bunks. The mounting holes are on the flat bottom of the frame on the rollers so these bunks are more versatile. They have a capacity of 3,000 pounds.
    view full answer...
  • Will Dutton-Lainson Boat Trailer Standard Roller Bunk # DL21755 Handle 3000-lb Sea Ray 190
    According to the Sea Ray website (which has an excellent archive section with complete specs) your 1997 model year 190 Bowrider has a dry weight of 2750-lbs. Since the boat's entire weight will never be concentrated in one spot you will have no problem using the Dutton-Lainson Boat Trailer Standard Roller Bunk # DL21755. You can also use multiple sets if you want to. The roller bunks are sold without hardware or mounting brackets; we offer bracket # DL21762 and four are needed for each...
    view full answer...
  • Using Bunk Rollers Like # DL21741 on PWC Trailer
    The roller bunks can certainly be used to replace the bunk boards on your PWC trailer, I use them on my PWC trailer and they work very well. You will need to ensure that the profile on the bottom of your PWC can handle the extra width of the rollers. Where the end of the 2 x 4 that the PWC rests on is typically 1.5 inches thick, these rollers would be 4-3/4 inches wide. You would need to ensure that portion of the hull that the bunks ride against are is wide enough to so that the rollers...
    view full answer...
  • Does Dutton-Lainson Boat Trailer Roller Bunk Come In Galvanized Version
    Yes, the galvanized Dutton-Lainson Boat Trailer Deluxe Roller Bunk - 5' Long Sections part # DL21741 is what you are looking for. The rollers are constructed of 12-gauge, galvanized steel and have zinc-plated steel rollers hardware included. This is considered an upgraded version of the standard Dutton-Lainson roller bank because it includes 12 sets of 3 rollers compared to the 2 rollers.
    view full answer...
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  • Roller Bunks And Brackets That Can Be Angled To Fit V-Bottom Boat
    To be able to mount roller bunks to your trailer and allow them to be angled to match the hull of your boat there are rollers and brackets that will work for you. You will need to use the Dutton-Lainson Boat Trailer Standard Roller Bunk, part # DL21755. These are black rollers that are 5-ft long. There are 12 sets of 2 rollers with this set. The brackets that can be used with these rollers is part # DL21762. Four brackets are needed for a pair of roller bunks.
    view full answer...

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