Originally Posted by irpq11
What is that?
A line lock is a device that allows you to lock the front brakes independently of the rear brakes via a switch
A line-lock allows the driver to set the brakes on just one set of tires. Usually, racers put a line-lock on the front tires in order to aid their burnouts. They set the brake, hold a button, and then release the brake pedal. The brakes will release on the back, but hold the front brakes until the button is released. Some people try to simulate a transbrake by having four-wheel line-locks. This allows the driver to hold the brakes with the button on the line, instead of his foot.