Athena 70cc Bolt-on Big Bore Cylinder Kits Reed Valves Carbon .30

For scooters optional high-performance crankshafts (Sold Separately) replace 66mm bore), Cylinder Head, Piston Assembly (Piston, Rings, 10mm Wrist Pin and Circlips), Carbon Reeds and All Required Top-End Gaskets 70CC Bolt-on Big Bore Cylinder Kits Note: It is recommended that athena's 17.5mm or 19mm scooter carburetor car carburetor be used these Bolt-on Big Bore Kits. See Fuel Systems Section. Pair of Carbon Fiber Reed Valves (.30) Reed Valves Carbon .30