Fixing system for rocker arms

A vehicle comprising a chassis, a rocker arm configured to connect a suspension to the chassis of the vehicle, and a fixing system for fixing a rocker arm of a suspension to a chassis of a vehicle in an adjustable manner, the fixing system comprising:

• a threaded rod, extending along a longitudinal direction (x) between a first end and a second end, opposed to the first end, wherein the threaded rod has a first thread at the first end and a second thread at the second end, and wherein the threaded rod further has a locking cavity, at the second end;
• a first cam arranged integral for rotation with the threaded rod by shape-fitting coupling with the threaded rod at the first end;
• a second cam arranged integral for rotation with the threaded rod by shape-fitting coupling with the threaded rod at the second end;
• a first nut, screwed on the first thread of the threaded rod to lock a position of the first cam along the longitudinal direction (x);
• and
• a second nut, screwed on the second thread of the threaded rod to lock a position of the second cam along the longitudinal direction (x), wherein the second nut has a locking portion that comprises a circumferential groove, and a positioning hole, passing through the circumferential groove;
• the fixing system further comprising a pin and an elastic clip, the elastic clip being shaped as an open ring and configured to be accommodated in the circumferential groove of the second nut to hold the pin in the positioning hole, wherein, in a predetermined screwing position of the second nut on the second thread of the threaded rod, the pin enters the locking cavity of the threaded rod so as to lock a position of the second nut on the threaded rod along the longitudinal direction (x),
• wherein the first cam and the second cam are arranged so that position of the rocker arm is adjustable as a function of an angular position of the first cam and of the second cam.