A pressure cylinder or bellows (1) with compressed air connection (7) has a flexible outer wall (19). On application of internal pressure, it expands longitudinally. It surrounds a wheel suspension- or damper rod.

The double-action pneumatic cylinder (1), located between wheel and bodywork, includes a piston (4) and piston rod (5), dividing the cylinder volume into two pressure chambers (8, 9). These are connected via an air passage opening (2, 3) with an equalizati...