Hydraulic Brake Upgrade Recommendations for a Boat Trailer with 3,500 lb Axles
Updated 02/17/2026 | Published 06/18/2024
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Question:
I want to add hydraulic brakes, hubs, and bearings on both axles of my boat trailer. Would you be able to send me a parts list for what Id need. Ive included a picture of the label on the axles. Thanks!!!
asked by: Troy
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Expert Reply:
Hey Troy, thanks for reaching out and providing all of the photos!
Here are the parts I recommend for getting your boat trailer setup with hydraulic brakes:
- DeeMaxx Disc Brake Kit # DE66YR (need 1 kit per axle)
- Hydrastar Electric Over Hydraulic Actuator Kit for Disc Brakes # HBA16-252-82
- Trailer Wiring 7-Way Upgrade Kit # ET7WK
The DeeMaxx disc brake kit gives you more power than a standard drum brake kit, and the Maxx Coating is the best on the market so you know your brakes will be in good shape for a long time. The reason I recommend using the Hydrastar system is because it is controlled by an electric brake controller (so you have more say in when the brakes are applied), plus you'll keep your standard coupler instead of having to remove your current coupler and replace it with one that actuates.
Attached are some videos for you to check out!
Product Page this Question was Asked From
DeeMaxx Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Maxx Coating - 3,500 lbs
- Trailer Brakes
- Disc Brakes
- Marine Grade
- 5 on 4-1/2 Inch
- Hub and Rotor
- 1/2 Inch Studs
- 3500 lbs Axle
- 14 Inch Wheel
- DeeMaxx
more information >
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Robin H.
2/17/2026
Hey Troy, how did the hydraulic brake setup go on your boat trailer with the DeeMaxx and Hydrastar kits? Your update could make it easier for the next person planning a similar upgrade.