Polini Reed Valve for 50cc 2-Stroke Air or Liquid-Cooled Engines COMPATIBILITY: Aprilia – SR R-Factory ’04-07 (Piaggio Engine), SR R-Factory Iniezione (Piaggio Engine) Derbi – GP1 50 2T ’01-03 Gilera – DNA 50 2T, Easy Moving 50 2T, Ice 50 2T, Runner Pure Jet 50 2T, Stalker 50 2T, Storm 50 2T, Typhoon (X) 50 2T Italjet – Torpedo 50 2T (Piaggio Engine) PGO – Star 50 2T Piaggio – Diesis, Extrem, Fly, Free, Liberty, MC2-98, NRG MC3, Quartz, Sfera, Zip Fast Rider, Zip SP Vespa – ET2, LX50 **NOTE: DELIVERY MAY TAKE UP TO 2-3 WEEKS** **