Athena 070200 Big Bore Cylinder Kit with Head (47.6mm, 70cc) - 10mm Pin Domed Head Piston Performance Upgrade, Converts 50cc to 70cc, Compatible with Yamaha Zuma 50 & Vino 50 Kenda Inner Tube high-performance transmission that offers up

high-performance transmission that offers up to 2

Built with a durable brushless motor

Our kit includes four BIG HAWG hole saws

GasGas EC (2018)

Upgrade your Yamaha dirt bike with the Polisport Chain Slider

Athena 070200 Big Bore Cylinder Kit with Head (47.6mm, 70cc) - 10mm Pin Domed Head Piston Performance Upgrade, Converts 50cc to 70cc, Compatible with Yamaha Zuma 50 & Vino 50 Kenda Inner Tube high-performance transmission that offers upUPGRADE YOUR SCOOTER TO THE NEXT LEVEL OF PERFORMANCE Extract maximum power and unmatched acceleration from your 50cc scooter with the Athena Big Bore Cylinder Kit (Part No. 070200), a premium performance package engineered in Italy to seamlessly convert your factory engine into a high revving, high output 70cc powerhouse. Entirely cast from high grade aluminum and treated with a specialized Motor Nicksil (Nickel Silicon) coating, this cylinder