For disc brakes, 6600 lb capacity.|
The Model 66 works by the "surge" or "push" of the trailer toward the tow vehicle.
This automatically synchronizes the trailer brakes with the tow vehicle axle brakes.
When the trailer pushes against the tow vehicle, the actuator telescopes together
and applies the force to the master cylinder, supplying hydraulic pressure to the brakes.
The built in dampening shock absorber retards the telescoping shock against the hitch
ball by depending on the brake fluid in the master cylinder.