To provided an improved vehicular air suspension capable of decreasing a shaft housing torsion load without additional machine torsion restrictor such as a torque rod.

This air suspension system is provided with a torsion member 14 securely supporting an air suspension shaft assembly 20. Preferably, the torsion member 14 is a rigid U-shaped member and gives automotive rolling resistance. The shaft assembly 20 is securely mounted to the torsion member 14 at an opposite side portion. Thereby torsional force acts on the torsion member 14. The shaft assembly is practically released from the torsional force, so that can be manufactured by a lighter housing. Another embodiment of the air suspension system is provided with an additional side support member.