Replacement Disc Brake Rotors and Hubs for a 2015 Road King Boat Trailer
Updated 04/07/2026 | Published 04/02/2026
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Question:
I have a 2015 Road King boat trailer and need a new set of rotors and calipers. Dual axle with 15inch wheels with 6 lug bolts on 5.5inch spacing. What kit would you recommend and do you include the lug bolts. I dont see them in the images.
asked by: Jerry
Expert Reply:
Hey Jerry. There's no database that shows me what parts are on your 2015 Road King boat trailer and their website wasn't much help either. There's way too many options to take an educated guess.
The DeeMaxx Disc Brake Kit item # DE82FR you were looking at, are slip on rotors that install over an idler hub. This looks like a pretty common setup for Road King trailers. The item # DE54VR would be better for a boat trailer though.
If you're wanting new disc braking hubs with the lug bolts or new idler hubs, I am going to need to know what size bearings are installed on one of your hubs. You'll need to pull one of the hubs and check for part numbers stamped onto the sides of the bearings.
Do you know what specific axle and hub combination you currently have on your trailer?
You can add this information, along with any other questions you have, where it says Add Comment.
Product Page this Question was Asked From
DeeMaxx Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 6,000 lbs
- Trailer Brakes
- Disc Brakes
- Marine Grade
- 6 on 5-1/2 Inch
- Rotor
- 1/2 Inch Studs
- 6000 lbs Axle
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- 17 Inch Wheel
- 17-1/2 Inch Wheel
- DeeMaxx
more information >
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Jerry
4/7/2026
thaniks for the reply. I do have the rotors that slip over the idler hub. I'll take a look at the DE54VR/