Description
3500 lb Hydraulic Trailer Brake Product Overview

Upgrade your trailer’s braking system with the 3.5K Hydraulic Free-Backing Drum Brake Assembly (Right Hand, Passenger’s Side). Designed for 3,500 lb axles, this 10″ x 2-1/4″ hydraulic drum brake assembly is perfect for a variety of trailer types. The free-backing design allows you to reverse without engaging the trailer brakes, even if your actuator is activated, providing smoother and safer maneuvering.
3500 lb Hydraulic Trailer Brake Key Features:
- Free-Backing Design: Allows backing up without brake engagement, even when the actuator is activated.
- Hydraulic Drum Brake Assembly: Ideal for surge-type trailer brake actuators.
- Automotive-Grade Friction Pads: Molded (not riveted) for long-lasting performance and increased braking torque.
- E-Coated Backing Plate: Resists wear and corrosion for extended durability.
- Manual Adjustment: Fine-tooth brake adjustment gear allows for precise settings.
- Adjuster Plugs Included: Keeps dirt and grime out of the assembly, ensuring clean operation.
- Brake Mounting Bolts Included: Nuts and lock washers sold separately.
- Single Plunger Design: Simplifies the braking mechanism for reliability.
3500 lb Hydraulic Trailer Brake Specifications:
- Part Number: 12-809
- Brand: AxleTek
- Application: Most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO.
- Configuration: Right Hand (Passenger’s Side).
- Dimensions: 10″ diameter x 2-1/4″ wide.
- Mounting Flange Bolt Pattern: 4-bolt.
- Wheel Size Compatibility: 13″, 14″, and 15″ wheels.
- Axle Rating: 3,500 lbs.
- Certification: QAI and CSA certified..
- Warranty: Lifetime “No-Crack” Warranty
3500 lb Hydraulic Trailer Brake Features Explained:
Free-Backing Brake Assembly:
The free-backing design of this 3500 lb Hydraulic Trailer Brake allows your trailer to move in reverse without the brakes being activated by the surge actuator. This is especially useful if your actuator doesn’t have a reverse lockout mechanism. The fall-away brake shoe provides full braking when moving forward but supplies only minimal friction when reversing.
Automotive-Grade Friction Material:
The brake shoes are lined with high-quality, automotive-grade friction material that is fully bonded—not riveted—for enhanced durability and braking torque. Tapered edges and circular grinding reduce the chance of cracking or crumbling, preventing mechanical lockup.
Easy Maintenance:
Adjuster plugs are included to cover access holes, keeping dirt and grime out of the assembly. The manual adjustment feature with a fine-tooth gear allows for precise brake settings to ensure optimal performance.
Note:
Because free-backing brakes are designed to eliminate nearly all friction between the brake shoes and the drum when driving in reverse, a trailer breakaway kit will not be effective should your trailer disconnect from your tow vehicle while backing up.
Safety and Compliance:
This brake assembly meets the requirements for certification by the Canadian Standards Association (CSA) and has been tested by QAI for braking performance under real-world conditions, ensuring a safe and quality product.
Compatibility:
Designed for use with surge-type hydraulic brake actuators, this brake assembly fits most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO.
Installation:
Brake mounting bolts are included. Nuts and lock washers are sold separately. Professional installation is recommended to ensure safety and optimal performance.
Upgrade Your Braking System Today:
Improve your trailer’s safety and maneuverability with this high-quality hydraulic free-backing drum brake assembly. Ideal for trailers with 3,500 lb axles, it’s a reliable choice for light to medium-duty applications.
Contact Us:
For any questions or assistance with your purchase, please contact our customer support team. We’re here to help you find the perfect fit for your trailer needs.
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