Used primarily in drag racing to provide positive locking action to the front wheels of race cars, reducing the chance of "Rolling the Lights" andproducing more effective "Burn Outs" for heating up the tires. Many oval track racers also use for right front brake shut-off. Rigorous testing has proved a 1/100, 000 of a second release time and vibration tests have seen up to 30G's applied without mechanical failure. Adaptable to most domestic and import hydraulic brake systems. Features: Advanced quality design stainless steel valve assembly for ultimate corrosion resistanceFully enclosed epoxy molded electrical coil for reliabilityAttractive finned aluminum housing helps dissipate heatWider lightweight base provides better mounting stability150 micron screen filtered ports to prevent contaminationField serviceable for cleaning or rebuildingExtra threaded port for separate bleeder or brake linepressure gaugeKit includes solenoid valve, snap-action switch, indicator light, 4-amp fuse, mounting screws andinstallation instructions* 12-volt negative ground systems only. CAUTION: The Hurst Roll/Control or Line/Loc® should not beused as an emergency brake, or any application requiring thesolenoid to be activated for a long period of time.Pit Stop USA offers Hurst Original Roll Control 174-5000 at low everyday prices. Be sure to check out all of our products from Hurst Shifters including Hurst Shifters Brake Shut-Off Valves,Roll Controls / Line Locks.