The Air Jammer Cycle Slammer was a bike that was powered by air pressure. You used a stirrup type air pump fixed to the rear of the bike to build up air pressure, and when you got it up to a certain pressure you "launched" the Bike and it would fly off. This was quite similar in design to Tomy's other Air Powered Vehicle, the Air Jammer Road Rammer.
The Air Jammer Cycle Slammer even made a fairly realistic motor cycle noise as it bombed around. Once the bike had been given some power with the air pressure pump you could even seen the piston of the bike being forced to move by the compressed air. Great fun for kids.