Yamaha points to "the push for more environmentally friendly machines" as the impetus for 4-stroke dirt bikes -- which sounds ...

SEE ALSO: You can soon ride the Avengers’ all-electric Harley-Davidson motorcycle Yamaha's e-bikes feature a 500-watt battery pack that recharges in four hours and an LCD screen that shows ...

Space and weight constraints make it tricky to package a hybrid drivetrain into a bike without making it bulky or expensive.

Read about Yamaha's prototype hybrid motorcycle that combines an internal combustion engine with not one, but two electric ...

Last week, Yamaha revealed a hybrid motorcycle ... engine with a motor generator mounted directly to the bike's crankshaft, with an electric drive motor connected to the rear axle.

It has a low 32.7-inch seat, an electric start ... consider the Yamaha YZF-R3 and the Yamaha MT-03. Both bikes use a 321 cc engine, but the YZF-R3 combines power with accessibility for $5,499 ...