Roll Control Solenoid

The HURST Roll Control Solenoid (model 5667550) is a line lock solenoid designed for serious drag racing and high-performance street applications where launch control and weight transfer management are essential. This electromagnetic valve isolates hydraulic pressure from the front brake circuit, allowing drivers to hold the vehicle steady at the starting line without relying on foot brake pressure.

The solenoid operates by electronically controlling brake line pressure and features a fail-safe design that ensures normal braking function when de-energized. Its compact, sealed construction measures 4.4 x 1.8 x 7.15 inches and weighs just 1.03 lbs, making it suitable for tight engine bay installations in modified vehicles. The integration into existing brake systems is straightforward, requiring only a 12-volt switched power source and ground connection.

This roll control solenoid is ideal for serious drag racers and street-strip enthusiasts who demand consistent, repeatable launches that minimize wheel hop and maximize traction off the line. HURST's engineering ensures durability across thousands of launch cycles, making it a critical component for both bracket racing and performance builds.