Yamaha makes a surprising move with its air-cooled 249 cc V-twin engine in the layout. It's a long-stroke mill with a 49 mm bore and 66 mm stroke rather than the usual over-square setup we see ...

The 250cc motor gives you the power to work the ... Both the 125 and 250 Hyosung GT models have DOHC, 8 valve V-twin engines, based on Suzuki designs, which are more than adequate for the job.