4.5 How big is the tubular constant pressure air chamber?

5 centimeters. According to the data of car home, the 4.5-tube constant pressure cabin needs 5 cm. The air chamber is a part of the automobile braking system, the spring braking air chamber is a part of the automobile braking system, which is installed on the driving axle of the automobile to provide braking torque for the automobile, and the combined spring braking air chamber is used to provide braking driving force for the wheel brakes.