Device for level change in vehicles

The height adjusting system for vehicles fitted with shock absorbers (1) comprises compression cylinders whose pistons (9) are annular. The piston rods (3) of the shock absorbers pass through the compression cylinder pistons. The internal diameter (D) of the compression cylinders (10) is greater than the external diameter (d) of the shock absorber cylinders (2) and their ends (11) are fastened to the shock absorber pistons. Independent claims are included for: (A) vehicles fitted with the assembly; and (B) height adjusting assemblies for adding to existing vehicles.