The Series 2 is here not only with an amended silencer logo but with improved torque and redesigned expansion allowing fitment throughout the Piaggio, Gilera and Aprilia scooter range including the early years.
Each system is maintaining the £99 price tag and includes variator rollers and all other components needed to fit. A jet increase will be essential on stock 50cc scooters, here is a link to the product for more information PMS1860
Here is a link to the exhaust shootout from July 2012 that explains a little about the true operating RPM of the series 1 and 2 and why this makes life easy for any DIY scooter tuner. Shootout