Athena 47.6mm Air Cooled Horizontal Minarelli/Yamaha Jog 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!
Fits Yamaha Zuma 2 Stroke from years 2002-2011 and Jog CY50 from 1992-2001.
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*You may need to modify your engine case to accommodate the larger cylinder.