Airsal 72cc cylinder kit for Puch Maxi scooters incl. all necessary parts: gaskets, piston, rings etc. (includes cylinder head). Completely new design includes different cooling fin distance etc. Another feature is the single piston ring set up. Improved heat dissipation over cast iron cylinders. 46mm liner is the max for Puch Maxi scooters, without having to do work to the crankcases.