Athena 47.6mm Vertical Minarelli Cylinder Kit

Athena 47.6mm Air Cooled Vertical Minarelli/Fits and compatible with 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! Fits "Pre-Bug Eye" Zuma (1989-1990, 1997-2001) Please see our Warranty & Returns Policy. *You may need to modify your engine case to accommodate the larger cylinder.
Upgrades to 70cc
Aluminum Construction with Nickel Carbide Plated Bore
Cylinder Bore: 47.6mm
Cylinder Sleeve Outer Diameter: 50.75mm Wrist Pin Diameter: 10mm
Total Piston Height: 48mm
Compression Height (from center of wrist pin hole to top edge of piston): 26mm
Includes Carbon Fiber Reeds
SUPPORTED MODELS: Fits and compatible with Yamaha