cylinder kit Airsal Xtrem 77.1cc 50mm, 39.2mm for Minarelli LC

Airsal Xtreme 77cc version with 50mm bore and 39.2mm stroke. Vertex piston as on 88cc and 80cc versions. 12mm gudgeon pins. Due to the bore, the crankcases need to be worked. Instructions included. Cylinder should run a 21mm carb as standard. Great performance and value for money.