sentences:  This made MAFAC brakes one of the most popular models from the late 1950s through the 1970s.The ability to clear larger tires also led to MAFAC cantilever brakes appearing on some of the earliest mountain bikes, including one of the first package-built mountain bikes, the 1981 Specialized Stumpjumper.The center-pulls were solid brakes and inexpensive which led to MAFAC brakes being specified on everything from inexpensive to competition level bikes.