Direct answer: When towing a vehicle, a supplemental brake system helps ensure smoother, more reliable braking across towed and towing scenarios. This guide highlights five top options, suitable for different trailer weights and installation needs. Best for frequent long-haul tows are automated, all-electric or proportional units; best for heavy-duty towing are rugged, durable designs; best for budget-conscious setups balance cost and performance. The following selections emphasize ease of installation, compatibility, and clear safety advantages for everyday American towing situations.
Summary table of chosen products:
- NSA RV ReadyBrake Towed Vehicle Supplemental Surge Brake System – Proportional, Mechanical, Universal Fit, USA Made
- Blue Ox BRK2022 Patriot Flat Tow Brake – All Electric, automatic setup checks
- NSA RV Ready Brute Elite II Tow Bar with Supplemental Brake System – Heavy duty, 8,000 lbs
- CURT 52202 RVibrake 4 Portable Flat Tow Brake System
- Demco Stay-in-Play Duo Braking System
NSA RV ReadyBrake Towed Vehicle Supplemental Surge Brake System
Key features: Proportional, Mechanical, Universal Fit, Made in USA. This system provides surge braking proportional to vehicle deceleration, making it a straightforward option for many common towing setups. It is suitable for owners who want a reliable, mechanically simple solution with country-of-origin confidence.
Best for: Casual to moderate tows and owners who prefer a straightforward installation without complex electronics. It’s well suited for vehicles where a solid, mechanical brake response is valued over advanced electronic diagnostics.
Why selected: The ReadyBrake option combines universal fit with mechanical reliability, making it a practical choice for many users seeking predictable braking without extensive electrical integration. It supports a broad range of towed vehicles and is suited for owners who value USA-made components.
Caution: Mechanical systems may require more hands-on setup and calibration during install. Verify compatibility with your tow bar configuration and ensure regular inspection of linkage for wear.
Blue Ox BRK2022 Patriot Flat Tow Brake
Key features: All Electric, Faster extension of braking action, Automatically checks brake pressure during setup. This unit integrates electronic controls to ensure timely brake engagement, with a setup routine that validates pressure to help reduce towed-vehicle drift.
Best for: Tows where precise electronic feedback and quick braking action are priorities, especially for drivers who want automated setup checks during installation.
Why selected: The Patriot’s automatic pressure checks during setup provide a clear advantage in ensuring the system is correctly calibrated before tow starts, improving reliability in varied road conditions.
Caution: Electrical components require exposure to the elements; ensure proper weatherproofing and regular electrical harness checks to prevent corrosion or connector issues.
NSA RV Ready Brute Elite II Tow Bar with Supplemental Brake System
Key features: 8,000 lbs capacity, heavy-duty aluminum body, US Made. This brake system pairs with a heavy-duty tow bar, delivering robust performance for larger towed vehicles.
Best for: Heavy-duty towing scenarios where higher capacity and durability are essential, such as larger motorhomes or vehicles with substantial mass towed.
Why selected: The Elite II combination emphasizes strength and reliability, ideal for frequent long trips or higher-load towing needs.
Caution: Higher capacity units may require more installation space and careful alignment with the tow bar; verify clearance and mounting compatibility with your vehicle and trailer hitch configuration.
CURT 52202 RVibrake 4 Portable Flat Tow Brake System
Key features: Portable, four-brake system design. This option is designed for easy transfer between vehicles or setups, providing a flexible solution for different towed vehicles.
Best for: Users needing a portable system that can be moved between multiple tow rigs, or for temporary setups where a permanent installation is not desired.
Why selected: The RVibrake 4 offers portability and simple operation, making it a practical choice for itinerant travelers or rental towing situations.
Caution: Portable systems may require more frequent re-calibration and setup time when switching between rigs; confirm brake line routing is secure for each install.
Demco Stay-in-Play Duo Braking System
Key features: Stay-in-Play design, integrated braking performance. This system emphasizes continuous brake action for smoother deceleration and improved towed-vehicle stability.
Best for: Towers seeking steady braking behavior with consistent engagement, particularly for longer tows or areas with frequent stops.
Why selected: The Stay-in-Play Duo focuses on stable braking and predictable performance, beneficial for maintaining control on varied road types.
Caution: Complex installation in some configurations; verify compatibility with your current hitch, wiring, and vehicle coupling equipment before use.
Buying Guide
- Towing weight and capacity: Match the brake system to the gross weight of the towed vehicle. Higher-capacity units are better for larger vehicles but may require more robust mounting hardware.
- Drive type and terrain: For frequent highway use, electronic or proportional systems often provide smoother, more consistent braking; for seasonal or occasional use, mechanical or portable options may be cost-effective.
- Installation and compatibility: Check fit with your tow bar, mounting points, and wiring harness. Some systems are universal; others require specific hitch models or brands.
- Maintenance and durability: Consider weather resistance, ease of service, and frequency of calibration or testing. All-electronic designs may need battery or power checks; mechanical designs require linkage inspection.
- Portability vs. permanent installation: Portable systems offer flexibility for multiple vehicles; permanent setups provide integrated performance with one vehicle.
- Ease of setup and safety checks: Systems with automatic pressure checks or built-in diagnostics can reduce setup errors and improve safety on the road.
Frequently Asked Questions
- What is a supplemental brake system for towing? It is an auxiliary braking mechanism that engages the towed vehicle’s brakes to improve stopping power and stability during towing.
- Do I need a supplemental brake system for every tow? Not always, but it is often required for longer tows or heavier towed vehicles, and may be required by law or by your insurance in some states.
- How do I choose between mechanical and electronic systems? Mechanical systems are simple and reliable with fewer electrical components; electronic systems offer automatic diagnostics and smoother actuation but require power and wiring considerations.
- Can I transfer a portable system between vehicles? Some portable systems are designed for easy transfer, but verify compatibility with each vehicle’s mounting points and wiring before use.
- What maintenance is needed for these systems? Regularly inspect mounting hardware, brake linkage, and connections; follow the manufacturer’s calibration or setup guidelines and check for wear or corrosion.
- Is professional installation recommended? For many systems, professional installation ensures proper alignment and safety compliance, especially for heavy or integrated setups.