How do dual master cylinders work?

Dual master cylinders are designed to enhance vehicle braking safety by splitting the braking system into two separate circuits. Each circuit operates independently, allowing for one to continue functioning even if the other fails. This setup typically involves a single master cylinder that drives two separate brake lines—one for the front brakes and one for the rear brakes. When the brake pedal is pressed, hydraulic pressure is generated in both circuits, ensuring effective braking performance while providing a backup system in case of a leak or failure in one circuit.