Product Details: The Bendix 15.75" Disc Spring Brake Chamber is designed to provide superior braking performance and reliability. This chamber features a no-touch power spring that prevents corrosion and coil clash, as well as an increased reserve stroke for emergency situations. The chamber also offers improved brake efficiency with 190 pounds of additional output force. This chamber is designed to fit most standard 15.75" disc brakes and is easy to install. FleetPride is your First Click in Heavy Duty®.