Since 1993 more than 100,000 units of the Aprilia RS4 125 two-stroke have been produced and sold in over 30 countries worldwide. It is in the younger and most competitive classes of the MotoGP that Aprilia has established itself as a true "school of champions". With the Aprilia RS series (RS, RSV, RSW and RSA) 250's and 125's, riders such as Biaggi, Rossi, Melandri, Stoner, Lorenzo and Simoncelli have raced and obtained their first great triumphs. A wealth of successes and technical skills that Aprilia has always transferred to mass production - both in terms of technical philosophy and aesthetics, faithfully replicating the image of bikes having achieved success with the greatest champions of contemporary motorcycling.