Spare Parts World Dealers Service&Manual News&Updates Hall of Fame Product Info Assembled Engine Timing Side Crank Case Head Cylinder Fly Wheels GM srl - Via Sabbionara 14/N - 36045 - Alonte (VI) - Italy - Vat Number 01586210245 - Telephone Number +39 0444833956 - info@gmengines.net Tecnical Sheet Capacity:                  498.12cc                  498.57cc                  498.39cc Cylinders:                      1                      1                      1 Bore:                      85.90mm                      92.00mm                      90.00mm Stroke:                      78.30mm                      86.00mm                      75.00mm                               4                               4                               4 N Valves: Timing System:                      SOHC                      SOHC                      SOHC Elettronic Ignition:                                  Digital or Analog                                       Digital or Analog                                      Digital or Analog Weight:                  25/27Kg                  25/27Kg                  25/27Kg Home Factory Ready Engines