A setup involving two braking mechanisms per wheel constitutes a significant alteration to standard vehicle braking systems. This modification typically entails the addition of a secondary caliper, often paired with its own dedicated actuation system, to supplement the original, factory-installed brake. A common application includes enabling a hydraulically-actuated handbrake in performance driving scenarios, where independent rear wheel locking might be desired.
The incorporation of such a system offers enhanced braking force and independent control of individual wheels. This is particularly beneficial in applications like drifting, rally racing, or off-road driving, where precise modulation of braking force is critical for vehicle control. Historically, this type of modification was primarily found in motorsport, but its use has expanded to aftermarket customization for street vehicles seeking improved performance or specialized capabilities.
