yamaha ysr50 with derbi gpr50 motor in it 5 Likes Follow Build View Build Builder: bobby costello Updated 09/22/2012 at 05:29 AM Moped: 1991 Yamaha YSR-50 15063 Builds : Derbi GPR50 15063 Builds : charmo 80cc 15063 Builds : arrow : : 15063 Builds Buy : Mikuni 26mm VM Main Jet: 210
