Crazy

The name Wärtsilä has a definite glow around it in the motorhead community. That's largely because of the RTA96-C, a 14-cylinder, two-stroke turbo diesel behemoth that our own Mike Hanlon endorsed as one of the Seven Wonders of the World back in 2004.

Halfway between an ebike and a dirtbike, the Stealth B-52 stunned us with its massive performance and fun factor ten years ago. Now, a new B-52R nearly doubles the power and torque, creating a pedal-assist ebike capable of highway speeds.

The Triumph Speed Triple RR is one of the fastest cafe racers on the market. But what if you could add a supercharger and boost its output to an insane 400 horsepower? The end product is not merely a display-only item, it’s completely street-legal!

Chinese humanoids are starting to move with extraordinary grace and agility, but Boston Dynamics is the OG in this field, and fresh video of its swivel-jointed Atlas robot running, cartwheeling and breakdancing shows it's still at the bleeding edge.

You’ve got to have a knack for the extraordinary when you smash not one but two Guinness World Records. Stunt rider Magnus Carlsson puts his name to the fastest handlebar-mounted wheelie and the longest distance traveled sitting backwards on a moto.

Honda has announced a concept bike that's modeled after Koraidon, Pokémon Scarlet's prehistoric dragon. In addition to looking crazy cool, the Koraidon bike will be able to "stand" and walk, thanks to Honda's proprietary self-balancing technology.

Usually, whenever you spot a custom build with a sidecar, you’d expect it to be based around a Honda, BMW, Harley, or maybe even a Triumph. Revival Cycles definitely had a different plan with this crazy, neon-laden sidecarcross!

Bike thieves can't steal it if they don't know it's there ... This remarkable motorcycle looks for all the world like a telecom signal box covered in graffiti – but at the touch of a button it rises up on wheels and rides away.

You can trust Russian mechanics to come up with some crazy stuff. This time, they've put a Fiat 124-derived Lada under the knife, and installed 16 chainsaw engines arranged in a V formation – because why not?

We've seen some mad Hayabusa custom bikes over the years, but this one's right out of the box. It ditches the original engine for a massive two-stroke V6, but Meggatech Projects plans to make it look close to a standard Suzuki once it's finished.

It's not every day you see a motorcycle cobbled together from old tractor parts – especially one that looks like this! Called Penny Farming, the bike features a huge front tire, and a steering wheel instead of handlebars.

The YangWang U9 is remarkably affordable for a 1,287-horsepower electric hypercar at around US$236,000. It also rocks a 'DiSus' active suspension system powerful enough to launch the car off the ground, or let it rotate on the spot in a "tank turn."