The phrase "piston brakes" refers to a type of braking system used in vehicles. It involves using pistons, which are small cylindrical devices, to apply pressure and stop the vehicle's motion. Full definition
That allows the six - piston brake calipers finished in red peek through. (topspeed.com)
In line with this principle, the company has a powerful 6 - piston brake system with fixed calipers in their product range to stop all that horsepower. (abt-sportsline.de)
It also has adaptive dampers and six - piston brake calipers. (automobilemag.com)