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Bow Roller Assembly w/ Bells for 4" Wide Bracket - TPR - 1/2" Shaft - Yellow

Bow Roller Assembly w/ Bells for 4" Wide Bracket - TPR - 1/2" Shaft - Yellow

Item # YR450Y-400Y
Our Price: $21.70
Boat Trailer Parts
Orders above $50 qualify for Free Shipping
Shipping Weight: 1.92 lbs
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Boat Trailer Parts YR450Y-400Y - Rollers,Roller Assemblies - Yates Rubber
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Replace your bow roller assembly with this complete kit. Includes a 4" roller, 2 end bells, and corrosion-resistant hardware. Yellow TPR material is stronger than rubber and softer than polyurethane, and it won't leave marks on your boat. 1-636-306-4830 to order Yates Rubber boat trailer parts part number YR450Y-400Y or order online at Free expert support on all Yates Rubber products. Great prices and Fastest Shipping for Bow Roller Assembly w/ Bells for 4" Wide Bracket - TPR - 1/2" Shaft - Yellow. Boat Trailer Parts reviews from real customers.
  • All Info
  • Reviews (78)
  • Q & A (0)
  • Photos
  • Why etrailer?

Yates Rubber Boat Trailer Parts - YR450Y-400Y

  • Roller and Bunk Parts
  • Rollers
  • Roller Assemblies
  • Bow Roller Assembly
  • Thermoplastic - Non-Marking
  • Yates Rubber

Replace your bow roller assembly with this complete kit. Includes a 4" roller, 2 end bells, and corrosion-resistant hardware. Yellow TPR material is stronger than rubber and softer than polyurethane, and it won't leave marks on your boat.


  • Bow roller assembly replaces the bow roller, end bells, shaft, and hardware on your boat trailer
    • Eases loading and unloading of boat
    • Supports front of boat as it sits on trailer
    • Helps to absorb road shock while boat is being towed
  • End bells ensure that your boat does not scrape along bolts or roller bracket
  • Thermal-plasticized rubber (TPR) construction
    • Non-marking, non-scratching material
    • Stronger and more durable than traditional rubber
    • Softer and more pliant than polyurethane
    • Yellow color
  • Zinc shaft and hardware with yellow zinc finishes are corrosion-resistant
  • Made in the USA


  • Application: 4" wide bracket
  • Shaft dimension: 6" long (not including bolt head) x 1/2" diameter
  • Roller dimensions: 3-3/4" long x 3-1/4" diameter
  • End bell diameter:
    • At widest point: 5-1/4"
    • At attachment point: 3-1/2"
  • Locknut diameter: 1/2"
  • Washer diameter: 7/16"

This complete bow roller assembly includes 1 roller with 2 matching end bells, plus the hardware you need to mount them on your trailer. Simply attach the assembly to the existing bracket on your boat trailer and you're all set! The TPR construction provides ultimate durability and strength over standard rubber rollers and will not leave marks on your boat.

450 Y Yates 4" Bow Roller - Yellow Thermal Plastic Rubber

400 Y Yates 4" Bow Bell - Yellow Thermal Plastic Rubber

11098ZY CE Smith Heavy Duty Hex Screw - 6" Long x 1/2" Diameter - Zinc

10961ZY CE Smith Flat Washer - 7/16" Inner Diameter - Zinc

10812ZY CE Smith Nylon Locknut - 1/2" Diameter - Zinc

Customer Satisfaction Score:

Customer Reviews

Bow Roller Assembly w/ Bells for 4" Wide Bracket - TPR - 1/2" Shaft - Yellow - YR450Y-400Y

Average Customer Rating:  4.8 out of 5 stars   (78 Customer Reviews)

Replace your bow roller assembly with this complete kit. Includes a 4" roller, 2 end bells, and corrosion-resistant hardware. Yellow TPR material is stronger than rubber and softer than polyurethane, and it won't leave marks on your boat.


Best price I could find and the upgrade took minutes but now I don't have black marks all over my bow.


The roller arrived on time which was good. However, one of the molded bell ends is defective and cannot not be used.”The mold failed!”


This product worked as described and was advertised at a very reasonable price. The video on their web site was very helpful in description of this product. It was super easy to install and looks great on my trailer.


Great customer service. Very friendly and helpful.


Haven't installed it yet but looks like it will work great, better than the old one on there now.


My roller on my trailer was still functional, but ugly. I went searching on my “go to” place, and found the exact new replacement roller. It fit perfectly and looks awesome again. Nice quality as well.


Great product and great price. I also like the fact that it comes with grade 8 hardware.


Great quality


This is a replacement on our boat trailer. Several months ago, I replaced the original that was getting aged, and the rubber was not as pliable as it used to be. After a few uses your roller I installed back in April, was ripped completely off one side while putting the boat back on the trailer. Something that has never happened before. This is the second one from eTariler, in a few months. This weekend the boat did not load as it used to. It was about to slide off the new set of rollers. I think this may have been made for smaller or lighter boats. It is much softer, or more pliable rubber than the original. I may have to find another, or return to the old original to the boat trailer.


Direct replacement, fits like the origi nal.

by: had everything I needed to replace critical parts for my 34ft. cruiser boat trailer. Reasonable prices and Wow SUPER FAST shipping!! I ordered YATES keel pads, keel rollers, bow rollers, roller end caps, pal nuts, and galvanized square U-bolts. All items were well packaged in one box. It's my second order from, very easy to navigate their inventory. One stop shopping. Absolutely will buy form etrailer again.


Good Fit Good material non marking on my boat.


I've ordered several items from etrailer now and would highly recommend them. Quality products, great shipping, easy online shopping and awesome support.


Exactly what I was looking for: good product, ease to order, price much lower than the Marine Store, delivered to my doorstep. However, try and get your shipping costs lowered. A buyer has to compare this product's cost and then add shipping as opposed to others that include shipping in their price.


Exact fit!! Great, love it!


The bow roller arrived sooner than expected. The video was helpful insuring the proper measurements.


Easy, user friendly website. The tracking info had a personal feel: seeing pictures of employees who handled our order from beginning to end was a nice touch . Excellent customer service, excellent company.


The description was spot on, which made the fit perfect. Haven’t notice any new marks on my boat yet. Would give a five star, but haven’t had it long enough yet to give a higher rating. This is my second purchase from etrailer, and will continue to purchase from them.


Love it!


Thank you to for having this product available and getting it to me quickly. Great selection, price and service.


This bow roller looks to be a much better alternative to the previous hard polyurethane roller that scarred my boat bow. It is much softer and rolls easier.


Perfect replacement for the bow roller on my Marine Master trailer. High quality roller with correct hardware. Super easy install.


Site was easy to navigate and place the order. Shipped quickly and product was just as explained. Looks great and look forward to no more black marks from the old roller....


Good product, prompt delivery, fair prices, would use etrailer again for my boat needs. Scott


etrailer was the only place I could find this part. Quality and fit were both excellent.

Show More Reviews

See what our Experts say about this Yates Rubber Boat Trailer Parts

  • Replacement Bow Roller for 2001 Magic Tilt Signature Series Boat Trailer
    Boat trailer makers do not keep track of specific smaller parts like rollers but based on the photos of the 2001 Magic Tilt Signature Series trailer that I reviewed it looks like the Yates Bow Roller Assembly # YR450Y-400Y is indeed the correct replacement part. You can just compare dimensions to make sure. This roller fits on a 1/2-inch shaft and has an overall length of 6-inches. Please also refer to the linked review video.
    view full answer...
  • Bow Roller Assembly w/ Bells # YR450Y-400Y Center Roller Width
    The width of the roller on the Bow Roller Assembly w/ Bells # YR450Y-400Y that is between the center roller bells measures 3-1/2 inches. This is a super popular size so I would be surprised if this didn't fit your Shorlandr trailer but I'd measure first to verify.
    view full answer...
  • Size of the Ends of the Bow Roller Assembly w/ Bells # YR450Y-400Y
    One the Bow Roller Assembly w/ Bells # YR450Y-400Y the diameter is 5-1/4 inches at the widest point and 3-1/2 inch where it attaches to the shaft. The shaft diameter it is designed is 1/2 inch.
    view full answer...
  • Bow Roller Recommendation Near 4 inches in Width
    For bow rollers we have 4 inch wide rollers like the part # YR450Y-400Y which would have an overall width of 3-3/4 inches and a diameter of 5-1/4 inches at it's widest point. Sounds like this would be your best option.
    view full answer...
  • How to Prevent Metal Bow Roller Brackets from Contacting the Boat
    Almost all bow roller assemblies have an industry standard hardness of 85a durometers. I was able to call my contact at Yates to confirm this. I do have a solution for you but we do not have any bow rollers with a hardness rating greater than 85a durometers at this time. However, I believe the problem you are experiencing can be eliminated using a wider roller as this would in turn dissipate the weight more evenly to minimize contact with the metal brackets. I recommend using the Bow...
    view full answer...
  • Replacing Bow Strap and Winch Mount on on Older Shoreline Sailboat Trailer
    That's a really interesting setup. We aren't really going to be able to help much if you want to use that winch mount in it's current configuration. If you could instead mount the winch like in the picture I attached you could then go with a different bow roller possibly. You'd be able to use the bow roller part # YR450Y-400Y you mentioned as well as the bracket part # CE31005PG.
    view full answer...
    Image 1 for Image 2 for
  • Bracket For The Bow Roller Assembly YR450Y-400Y
    The CE Smith Bow Roller Bracket for Winch Stands # CE31005PG will work with The Bow Roller # YR450Y-400Y. The bracket accepts any 3 inch to 4 inch bow roller or Y-stop. The bracket is made out of 11-gauge pre-galvanized steel that can be painted to match your trailer. The bracket has a bolt-on installation but does not come with the included mounting hardware. I attached a review video link below.
    view full answer...
  • Solution for a 5 inch Bow Roller Assembly
    I have a 5 inch roller, but the largest Bow Roller Assembly that we offer is a 4 inch, like part # YR450Y-400Y. The CE Smith Deep V Keel Roller Assembly # CE10401G is 5 inches and will accomplish the same task that a bow roller will. The only difference that you will need to consider is that the shank diameter for the 4 inch bow rollers is 1/2 inch while the keel rollers use 5/8 inch diameter shafts. You can take your old assembly off and mount this assembly if the 5/8 inch diameter shaft...
    view full answer...
  • Can Y-Shaped Bow Stop Be Replaced with Bow Roller On Boat Trailer
    If you are referring to a bow stop such as the Yates Y-Style Bow Stop for Boat Trailers part # YR7Y44-4 then yes you can replace this with a bow roller such as the Bow Roller Assembly part # YR450Y-400Y which won't mark the boat. This can then be used with the CE Smith Bow Roller Bracket for Winch Stands part # CE31005PG or you can match one to fit the bracket you have now from the list below.
    view full answer...

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Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Cole B
Installed by:
Cole B
Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Chelsea B
Written by:
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Employee Jenny M
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