BMW still builds an inline-six that forgoes forced induction. However, it only bolts this engine to a motorcycle. The 1.6-liter unit attached to the BMW K1600 has many hallmarks of the naturally ...

Air/liquid-cooled four-stroke flat twin engine with double overhead and chain driven camshafts (BMW ShiftCam) and balance gear wheels 11° twin-cylinder unit with desmodromic distribution ...