Athena 070100 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 & Minarelli Vertical Ceramic Disc Brake Grease 0Ah Battery Pack – 2-Pack

0Ah Battery Pack – 2-Pack

or concrete anchors

complete with a sensor holder for secure mounting on grade rods and a Sokkia Field Book

Our innovative T3 3-piece design eliminates bottlenecks in exhaust flow

or rugged rally conditions

Athena 070100 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 & Minarelli Vertical Ceramic Disc Brake Grease 0Ah Battery Pack – 2-PackUPGRADE 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. 070100), 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