While engine swaps are common in project cars and tuners, motorcycle engine swaps are way less common because they require a lot of planning beforehand.

Before Chevy small block V8-powered Boss Hoss Cycles and seven-cylinder aircraft radial-engorged JRL Cycles Lucky 7s, there was the 1966-1980 Münch Mammut. In English, that's "Mammoth," which is the ...

This tiny car was never meant to handle motorcycle power, but that didn’t stop them. The builders decided to swap in a high-revving crotch rocket engine, turning the small car into an absolute missile ...