Have you ever thought to yourself how cool it would be to stuff a Honda CB350 Four engine inside a 1973 Honda Z50 Mini Trail bike? Even if the answer is “no,” don’t worry—collector, builder, racer, and long-time Honda enthusiast Bob Guynes took it upon himself to craft exactly that combination. At Mecum Las Vegas, 2022, a number of bikes from Guynes’ collection crossed the auction block at no reserve and sold, including this not-so-mini minimoto.
From the factory, the Z50 produced an eye-watering 2.5 horsepower from its tiny little single-cylinder engine. Guynes loved building bikes, and decided that simply wasn’t enough. Could he fit Honda’s tiniest little inline four engine into that frame? Apparently, he made it work—adding additional downtubes, custom motor mounts, and making that engine a stressed member for this heckin chonker of a minibike. We can’t tell you how it rides, but it does at least look pretty fantastic.
