Polini,have produced this reliable cast-iron kit for everyday use. Will work with the original carburettor although mainjet should be increased by aprox. 8-10%.Remarkable because of its massive bottom end punch, which makes it wheely addict's premier choice. Comes with gaskets, piston and cylinder-head Aplication: APRILIA: SCARABEO 50 STREET 2T RESTYLING Piaggio DERBI: ATLANTIS 02-BULLET-CITY-TWO CHIC Piaggio GILERA: EASY MOVING - ICE - STALKER - STORM - TYPHOON 50 - TYPHOON X 50 ITALJET: TORPEDO 50 mot. Piaggio PIAGGIO: DIESIS - EXTREM - FLY 50 2T - FREE - LIBERTY 50 (ruote alte) - SFERA 50 - SFERA 50 RESTYLING - VESPA 50 ET2-LX - VESPA 50 S 2T - ZIP 50 AIR - ZIP 50 AIR mod.2000 - ZIP 50 FAST RIDER Compatible with: - Aprilia: Scarabeo 50 Piaggio_S - Gilera: Stalker 50 AC_S, Thyphoon 50 AC_S - Piaggio: Beverly 50 06-_S, Liberty 50_S, NRG 50_S, Vespa 50 ET2_S, Zip 50 2000_S, ZIP SP 01-_S