The RS50 is a GP derived replica sport production motorcycle

Motorcycle

A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...

 made by Aprilia

Aprilia

Aprilia is an Italian motorcycle company, one of the seven marques owned by Piaggio, the world's fourth largest motorcycle manufacturer.Aprilia started as a scooter manufacturer, but has more recently come to be known for its race-winning sportbikes...

. It is powered by a single cylinder 2-stroke aluminium cylinder block, liquid cooled 49.9 cc Motori-Minarelli AM6 engine. The bike is popular in countries that have restrictions on motorcycle engine size. In restricted form the RS50 is capable of speeds of 50 kilometre per hour, in derestricted form the motorcycle is capable of speed up to 100 kilometre per hour. This and other similar machines such as the Derbi GPR 50 and Yamaha TZR50 have also been popular choices as a more adult-sized option for MiniGP racing, which is otherwise more commonly participated in by riders of smaller bikes such as the Honda NSR50

Honda NSR50

Honda's NSR50 is one of the most commonly raced bikes in Minibike club road racing. Though the NSR50 is not street legal in the United States, safe and legal racing environments are available in many states, often found at kart racing tracks....

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