Star washer for the variator pulley for scooter with engine piaggio 50 after 1998Aprilia Scarabeo 50 (2004-) (2-stroke) (Piaggio engine)Aprilia Sportcity 50 One (2-stroke)Aprilia Sportcity 50 One V4 (4-stroke)Aprilia SR 50 Di-Tech (07.2003-) (Piaggio engine)Aprilia SR 50 R Factory injection (2005-)A..