Demco 8104311 DA10 Hydraulic Surge Brake Actuator with Drop and Electric Lockout 2-5/16" Ball 12,500 lbs

The Demco 8104311 DA10 hydraulic surge brake actuator is a heavy-duty braking solution designed for trailers equipped with disc brakes. This actuator automatically engages your trailer's disc brakes when your tow vehicle slows or stops, eliminating the need for a brake controller. With a 12,500 lb gross vehicle weight rating and 1,250 lb maximum tongue weight capacity, it's ideal for boat trailers, utility trailers, and other marine applications.

Key Features:

• 12,500 lb GVWR capacity with 1,250 lb maximum tongue weight
• EZ-Latch coupler with 2-5/16" ball size and 4" drop for secure, confident connections
• Electric reverse lockout solenoid prevents brake engagement when backing up
• Rustproof aluminum master cylinder for long-lasting performance
• Durable zinc plating provides superior corrosion resistance for marine environments
• Compatible with disc brake systems only
• Mounts on 3" wide straight trailer tongues (requires 1/2" x 4-1/2" grade 5 bolts)
• Made in the USA with a 1-year warranty

The electric reverse lockout feature ties into your vehicle's reverse light circuit through a 5-pin, 6-pin, or 7-pole connector, automatically disengaging the brakes when reversing. This makes backing up boat trailers and launching significantly easier compared to manual lockout systems. The EZ-Latch coupler mechanism provides positive visual confirmation of proper hitch ball engagement, eliminating guesswork during hookup.