Parts Needed to Add Brakes to Axle of Diamond City Tandem Axle Boat Trailer
Updated 10/27/2025 | Published 03/25/2025
Products Featured in This Question
Question:
i have a new Diamond City tandem axle aluminum boat trailer with leaf springs. I would like to put marine grade drum surge brakes on one axle. With Drexel galvanized 10” drums and Kodiak flexible lines. Because of certain needs, I want to use the Drexel dx27fr actuator. My question is, will these hubs fit and does this whole set up seem ok. The trailer has 3500 axles 5-4.5 bolt pattern
asked by: Paul C
Expert Reply:
Hey Paul, thanks for reaching out!
I saw you purchased the following:
- Dexter Trailer Hub and Drum Assembly # 8-247-50UC3
- Hydraulic Brake Kit # AKFBBRK-35-D
- Kodiak Hydraulic Brake Line Kit # 18SI-BLKIT
- Dexter DX7.5L A-60 Brake Actuator # DX27FR
Those parts will all work great with each other and provide you with the braking you had asked about. The only downside to equipping brakes on one of the axles (as opposed to both) is less braking power, but there are a lot of people that only have brakes on one axle so I can't say this is necessarily unheard of. Just understand that you'll have less braking power, and you'll be good to go!
Product Page this Question was Asked From
Kodiak Hydraulic Brake Line Kit - Single Axle - 18'
- Accessories and Parts
- Brake Actuator
- Trailer Brakes
- Disc Brakes
- Hydraulic Drum Brakes
- 18 Feet Long
- Brake Lines
- Flexible Brake Hose
- Brake Line Kits
- Single Axle
- Kodiak
more information >
Continue Researching
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
- Q&A: Difference Between Dexter DX7.5L A-60 Brake Actuators For Disc Brakes
- Q&A: Recommended Replacement for Atwood Surge Brake Actuator 85778
- Article: How to Bleed Your Trailer Surge Brakes
- Q&A: Replacement Parts for EZ Loader Boat Trailer
- Q&A: New Brake Assemblies, Hub/Drums, Brake Lines, and Bearing Buddy for Trailer with 3,500 lb Axle
- Article: Trailer Wiring Diagrams
- Q&A: Parts Needed To Add Electric Drum Brakes To Boat Trailer
- Q&A: Recommended Disc Brakes, Actuator, and Lights for a 2005 Karavan Classic Boat Trailer
- Q&A: Replacement Coupler that Could Fit 2006 Easy Loader Trailer Sk20
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Most Popular Wheel Bearings
- Article: Adding Electric Over Hydraulic Disc Brakes
- Article: How to Measure Your Trailer Wheel Bolt Pattern
Jon G.
10/27/2025
Hey Paul, how did the brake setup on your Diamond City trailer turn out with the Dexter actuator and Kodiak line kit? Your update could make it easier for others planning a similar single-axle brake setup.