Demco Trailer Brakes & Brake Parts

Demco Trailer Brakes & Brake Parts: Engineered for Safe, Confident Towing

When it comes to trailer braking systems, few names carry as much weight as Demco Trailer. For decades, Demco has engineered hydraulic braking components with a relentless focus on safety, durability, and ease of maintenance — making their brakes and brake parts a go-to choice for trailer builders, boat owners, and towing enthusiasts alike.

Hydraulic Brake Actuators Built in the USA

Demco trailer brake actuators are built heavy duty in the USA for the safest braking and extended trouble-free life. Their actuator lineup spans a wide range of capacities: available in 7,000 lb. to 20,000 lb. G.V.W.R. models, a Demco trailer brake actuator is tough, safe, and durable, providing years of hassle-free service for just about any towing need.

Thoughtful engineering details set Demco actuators apart from the competition. A diaphragm in the master cylinder cap provides a completely enclosed system, a raised fill plate prevents intrusion of contaminants when removing the cap, and a bellow boot on the push rod offers more resistance to moisture and contaminants. A color-coded decal on the emergency lever even lets operators take a quick glance to confirm whether brakes are on or off — a small but meaningful safety feature in the field.

For heavy-duty applications, the DA20 disc brake actuator is rated for a 20,000 lb. G.V.W.R. and is available in weld-on and bolt-on mounts, including a 50-degree A-frame weld-on mounting option. Do-it-yourselfers also appreciate Demco's actuator kits for the DA91, DA10, and DA20, which come unprimed and unassembled for weld-on applications — making assembly easier after welding and painting are completed.

Hydraulic Brake Assemblies for Every Axle Size

A Demco hydraulic brake assembly includes the backing plate, brake shoes and springs, and is available in 10", 12", and 13" diameters, with drums sold in matching sizes. Available as free backing brakes, uni-servo brakes, and duo-servo brakes, the Demco 10" hydraulic trailer brake assembly is rated for 3,500 lb. axles. Free backing brakes incorporate a "fall-away" shoe that reduces shoe drag when in reverse and feature a galvanized back plate and stainless steel spring hardware, as well as a plated wheel cylinder and riveted marine brake shoe.

For those needing more reverse braking power, uni-servo brakes provide 15 to 20 percent of full braking power in reverse, while duo-servo brakes deliver the full 100 percent of braking power while reversing. For larger axles up to 5,200 lbs. and wheels up to 14.5" to 16", the Demco 12" hydraulic trailer brake assembly handles the demands of larger, more heavily loaded trailers.

Solenoids, Master Cylinders & Brake Lines

Demco's brake parts catalog extends well beyond complete assemblies. The Demco Inline Electric Reversing Solenoid mounts to the back of a master cylinder to shut off pressure to the brakes for reversing, and Demco also offers master cylinder replacements for both disc and drum brakes, as well as solenoid conversion kits for all of their actuators. Brake line kits cover single solid axle, single torsion axle, tandem solid axle, and tandem torsion axle configurations, along with actuator brake bleeder components.

Demco Trailer Component products are manufactured and assembled with the highest standards of quality to ensure safety and dependability — a philosophy that runs through every bracket, boot, and brake shoe in the lineup. Whether you're servicing a boat trailer, utility hauler, or heavy equipment trailer, Demco's braking system components provide the confidence that comes from purpose-built, American-made engineering.