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Pinasco Sport Pro 70cc Ceramic coated Nikasil lined cylinder kit is some of the best we have found. Larger intake ports than the NCY and wide open exhaust port as well. That translates into really good power down low and throughout the powerband.
Ceramic Coated Aluminum Cylinder w/ Nikasil Lined Bore
47mm Dual Ring Piston
Carbon Fiber Reeds
10mm Wrist Pin
Small End Bearing
Gaskets & O-Rings