Top Line Manufacturing CGSD42 Gooseneck Coupler Surge Disc Brake Actuator

The Top Line Manufacturing CGSD42 is a heavy-duty gooseneck coupler with integrated surge disc brake actuator, engineered for use on gooseneck trailers equipped with hydraulic disc brake systems. Designed to mount directly over a standard gooseneck ball, this actuator converts the compression forces experienced during deceleration into hydraulic braking pressure, delivering smooth, proportional braking performance without the need for an electronic brake controller.

Key Features:

• Gooseneck-style coupler with built-in surge disc brake actuation
• Compatible with standard gooseneck hitch balls
• Hydraulic surge mechanism activates disc brakes automatically during deceleration
• Heavy-duty steel construction for durability under high-load towing conditions
• Self-contained hydraulic system — no brake controller required
• Designed for use with hydraulic disc brake systems on trailers
• Includes safety chain attachment points

The CGSD42 is ideal for horse trailers, livestock trailers, car haulers, and other heavy gooseneck trailers where reliable, fade-resistant disc braking is required. Top Line Manufacturing is a recognized leader in trailer brake actuators and coupler assemblies, and the CGSD42 reflects their commitment to safety and performance in demanding towing applications.