Pinasco 70cc Big Bore Cylinder Kit for 50cc 2-Stroke Liquid-Cooled Piaggio ScootersCOMPATIBILITY: Piaggio – Liberty (L/C), NRG (L/C), NTT (L/C), Quartz (L/C), Zip SP (L/C)Cylinder Pinasco 47mm aluminum with 70cc liquid cooled “G – FORCE” dual band piston for scooters. The G-Force 70 cc kits are equipped with an aluminum cylinder with Gilnisil galvanic coating, timing designed to ensure maximum performance at high revs without sacrificing torque at the bottom, high turbulence heads to be able to work with high compression ratios without incurring detonation phenomena with commercial gasoline.**