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Athena 070100 Big Bore Cylinder Kit (70cc Bolt On), 47.6mm Bore
Athena 47.6mm Air Cooled Vertical Minarelli/Yamaha Zuma Big Bore Cylinder and Head Kit. Kit includes cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket, exhaust gasket and carbon fiber reeds. When you use this Athena 47.6mm Big Bore Kit you will increase your total displacement to 70cc! You may need to modify your engine case to accommodate the larger cylinder.
Aluminum Construction with Nickel Carbide Plated Bore. Cylinder Sleeve Outer Diameter: 50.75mm. Compression Height (from center of wrist pin hole to top edge of piston): 26mm. ANY DAMAGES FROM INSTALLATION IS ON YOU.