TDR Gear Box Ratio for Jupiter Z

Advantages of TDR Gear Box Ratio : - Made with special material processed using high technology machine which produce more precise gear box ratio so that easier to do gear shifting. - Designed with special heat treatment guarantee that gear ratio have better durability. - Available in many size adjustable as engine needs and track character. - TDR Gear Ratio has been used by many racing team. Size : 13-34 18-32 21-28 21-24