Puch-Allstate-Sears Moped Piston Kit-new. This is a 38mm piston kit for THE OLD PUCH MOPEDS. This is NOT for the 1970's Maxi type mopeds. This piston kit fits 1954-1966 MS 50 Mopeds. These were sold as Allstates in the US and Canada, or by Puch elsewhere in the world. This piston kit comes with the new STOCK SIZE (38mm) piston, piston rings, 10mm Wrist pin, and new wrist pin circlips. This only fits these early mopeds. Please note that this kit has a 10mm wrist pin. If you need a piston for a Maxi series moped we stock those too, but this is for old 50's & 60's period bikes only. This piston kit is new and in perfect condition. If you have any questions please e-mail. We only sell to, and ship to US destinations. No international bidders please. Flat rate postal shipping will cover 48 of the US states (AK. & HI.-no)