From the mid-sixties through 1972, the compact A-Body cars ordered with the disc-brake option carried the Kelsey Hayes 11-inch disc-brake system. Like true racing disc-brake systems, the Kelsey ...

Although disc brakes were commonplace on compact Mopars from 1973 onwards, owners of earlier A-Bodies will typically find drums behind the wheels. It is true the Kelsey Hayes four-piston disc ...

The Boss is similar to the rest of the 1960s Mustangs with 11-inch power disc brakes ... four-piston calipers originally made by Kelsey-Hayes. The race teams fabricated a custom bracket to ...