THIS IS THE LATEST DEVELOPMENT OF THE S5 USING THE 4 STROKE PIAGGIO ENGINE FROM THE ET4 RANGE. SHOULD BE AVAILABLE AS A KIT SOON . WILL ALSO BE AVAILABLE AS FULLY BUILT SCOOTER COMPLETE READY TO GO ! TUNING OPTIONS ARE AVAILABLE TO INCREASE CAPACITY TO 154 CC WITH UPRATED PM PIPE THIS OPTION WILL GIVE AT LEAST EQUIVALANT PERFORMANCE COMPARATIVE TO A STD 2OO CC GEARED SCOOTER. REPOSITIONED BATTERY AND REDESIGNED FUEL TANK ALLOWS USE OF STD STEEL LAMBRETTA TOOLBOX.