I’m on a weird kick for giant motorcycles at the moment, so I think it’s time we take a moment to remember the Gunbus 410 – named for the cubic inches of displacement from that monstrous V-Twin engine. For those of you that prefer to think of displacement in liters, that equates to 6.7L (like what Ford is using for diesel engines for their Super Duty truck lineup).
Built by Leonhardt Manufacturing (I’d link you but it looks like they’re now out of business) just a couple of years ago, this was claimed to be the world’s largest motorcycle. They were offered in a production run for $350,000 a piece, but I haven’t found documentation that a single one was purchased. Quick specs: 11 feet long, 30 inch seat height, 350 horsepower and 523 pound-feet of torque. Oh yeah, and it weighs 1,433 pounds!
Annoyingly, almost every video of this is just a picture compilation. I haven’t been able to find a video of the bike in motion – this is the best I could find:
And as a consolation prize, here’s a video of the engine (2 cylinders of a 9 cylinder radial aircraft engine) at idle: