Hi; This isn't really a performance posting but I thought that i would ask here seeing as that many of the people on this forum play with French bikes and would know what I am talking about and possibly have spares. I am looking for a Motobecane piston for an AV7 engine, from a 40 or 50 Mobylette, it is the kind with the ports or windows in the side. Used is fine if it is in good condition, I may need to know if the piston has a letter on the dome to match it to my cylinder. Anyhow you can email me through the address posted on my profile. I may be interested in other parts as well, starter clutch shoes spring to mind.