One of the major problems of the Fiat 500 Abarth is the imprecision of the rear axle. This phenomenon occurs especially under braking and entering corners. Some typical comments of Abarth owners are:"It seems to have to tame a snake who wants to escape from the hands"or even "it seems that the back float or write." This phenomenon is really harmful in sporty and dramatically increase lap times making driving difficult and sometimes dangerous. This is due to the fact that the rear axle, of the original series, is mounted to the body via silentblocks. The latter allow a limited movement which generates the movement of the wheels generating the phenomena described above. The kit consists of motorsport uniball, their seats and spacers all made of anodized Aluminum and all the necessary components for assembly. This kit will drammatically eliminate all the problems previously described.