Great replacement to keep your moped looking original. It is a high quality cast aluminum cylinder. This Motobecane AV7 Cylinder Kit is 39mm. Piston stamped MBK. This kit is for all American style Motobecane mopeds with the AV7 engine and also works with the AV85, AV88 and similar Euro style engines. Kit includes: *39mm piston ( Approx 49cc) Comes with *Cylinder *Wrist Pin *Circle Clips *
*Does not include any gaskets*
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On a all stock av7 with a sha15 this thing hits 38mph every time you twist the throttle!