Ask anyone who?s ridden a Honda Grom, and they?ll tell you it?s ridiculous fun. Perhaps the most fun you can have on two wheels.
It only weighs 225 pounds (102 kilos), so the 125 cc single offers plenty enough snap?enough to get you up to an indicated 70 mph. And since a new Grom costs only $3,200, it?s possible to customize it without breaking the bank.

Of course, some people just don?t know where to stop. Like the folks at MAD Industries of Costa Mesa, California. Despite their main business being custom cars, they?ve also built two of the most insane, cost-no-object Groms we?ve ever seen.
The white bike looks like a mini Ducati Monster?and over short distances, probably has the performance to match.

The fuel-injected engine has been bumped up to 204cc by Grom hop-up specialists FinBro Garage. New internals include a big valve kit, and a forged piston and connecting rod. Fuel economy takes a hit, because there?s now a 34mm upgraded throttle body and a high-flow injector. There?s also a new intake and exhaust from Brocks Performance, and a custom ECU to keep the fancy hardware running sweet.

Most of the other parts come from ComposiMo, one of the leading Grom and Ruckus aftermarket suppliers. Their lowering kit drops the bike a couple of inches, and there?s a stretched swingarm worthy of a dragbike.
More familiar names are Öhlins (shock and steering damper), and Brembo and Galfer for the brakes. The tires are Pirelli Diablos?but the 12-inch scooter fitment.

I...