Abstract: Front wheel suspension system for motorcycles comprising relatively spring-mounted elements being associated to the front wheel on the one side and to the ball-head of the motorcycle on the other side. Said spring-mounted elements are constituted on the one side by one single support arm, which arm is connected to the ball-head of the motorcycle and extends along only one side of the front wheel and is provided with guide means, and on the other side by a shift piece, which shift piece is rotatably connected to the shaft of the front wheel and is also provided with guide means, the guide means of said support arm and of said shift piece cooperating with each other. A shock damper means is connected on the one side to the front wheel through the shift piece and on the other side to the support arm.