ANTI-ROLL VALVEKIT, REBUILDABLE SOLENOID AND LOCK VALVE FOR DRAG RACE CARS. ENHANCED VERSION CAN BE PUMPED UP WITH BUTTON HELD • Now Moroso offers it's Anti-Roll/Brake Line Lock Enhanced Version Valve by itself. Ideal for the installer who wants to wire their Anti-Roll switch a certain way. • Brake line locks are used in Drag Racing to lock the front wheels and hold the car in the water box for the burnout or to prevent creeping into the starting lights • Anti-Roll design has better holding power than any other unit currently available • Enhanced version valve has an internal check valve which allows the driver to pump up the brakes when actuated • Will work in applications with ABS • Heavy-duty construction and quality components provide reliable operation after repeated use