Bikes
Mini roadracing is the sport of racing small displacement motorcycles on pavement, including go-kart tracks and indoor arenas. Current rules allow for two-stroke engine displacements up to 93cc, and four-stroke engine displacements up to 150cc. Common two-stroke machines include Yamaha YSR50's and 80's, Honda NSR50RR's and the Metrakit 50, 80, and 80cc motorcross (dirt) bikes fitted with street tires as well as GP 125's with 80cc two-stroke liquid cooled engines transplanted in them. Mini Moto (pocket bikes), scooters and Mopeds (Mobilette).