An SLP exclusive, this unit is designed to fit all 1999-04 4.6L SOHC and 2003 DOHC Mustangs. Here's how it works: Press the brake pedal and flip the brake-control (line lock) solenoid switch. Remove your foot from the pedal, and the solenoid maintains line pressure to the front brakes until the switch is released. This makes it easy to heat the rear tires in the burnout box, while minimizing wear and tear on your car's rear brake components. You can also use the system to prevent a manual-transmission car from rolling out of the staging beams at the starting line.

This kit is custom-fitted to the Mustang Chassis (no tweaking or fabrication required) and is fully compatible with the factory anti-lock braking and traction-control systems. It includes a waterproof electrical solenoid, an activation switch, plug-in wires, CNC-bent steel lines with correct OE fittings, mounting hardware and detailed installation instructions.

This product is also referred to as: Roll Control, Line Lock, Line Loc, Launch Control, Anti-Roll, Stage Control and Roll Stop.