mid-tier scooters with 250 - 400cc engines, and high-end scooters featuring big 500-plus cc engines. Among the more popular scooter models from Yamaha's global lineup include the Yamaha Aerox ...

The 398.15cc DOHC 4V/cyl liquid-cooled single-cylinder engine on Triumph Scrambler 400X is capable of generating 39.5 bhp and ...