Text from the website:
The engine that used is a rotary air engine. It is the invention of the Melbourne engineer Angelo Di Pietro. The engine is compact, lightweight and powerful and runs on compressed air from two compressed air tanks on the bike. It revs up to 3,000 RPM, and because of this, the inventors didn’t need any gear box on the bike. There is only one gear, which is just a sprocket bolted directly to the axis of the engine and chained to the rear wheel.
Compressed air is stored in the bike’s on-board carbon fiber tanks. Once mass produced, the bike will have solar panels that will generate enough energy to compress air and store it in the bike’s tanks, which will increase its range indefinitely.
As the bike was designed as a speed record setter, there is no headlight, brake light or indicator lights on the bike. Instead, there were three little cameras fitted at the front and tail on the bike that are used to record the run. The body works were designed to be aerodynamic and lightweight, and it will be made of fiber glass or carbon fiber.
Green Speed Air Powered Motorcycle for Zero Pollution Effect