The MGM Brakes Long Stroke Air Brake Chamber is the perfect choice for heavy duty applications. This chamber features a 3" stroke, 3/8" inlets, and an epoxy coated center case for superior durability. The tamper resistant parking chamber design ensures that your brakes will stay in place and remain secure. The heavy duty reinforced diaphragms and center hole diaphragms with spring side models provide superior performance and reliability. FleetPride is your First Click in Heavy Duty®.