When I say "swap," you say "Hayabusa", usually. But, today, you say "1970s Kawasaki KH400." That's right, someone took a 401cc, 2-stroke, 3-cylinder ripper and put from a Kawasaki and put it into another Kawasaki from the same era—a KV75.
This thing is bonkers. Just listen to it roaring into life.
This isn't the most powerful big-2-stroke meets tiny bike swap we've ever seen, that award goes to this 350cc Banshee-Grom conversion. But I'd go as far as to say that it's the best sounding, and possibly the craziest, considering a Kawasaki KV75 from the 70s is much smaller and less stable than a modern Grom, and the power gain is so much.
