True to their off-road nature, Beta dirt bikes are low on frills ... and supermoto bikes, each with a choice of 500cc, 620cc, and 700cc engines. These are dedicated off-road machines, as evidenced ...

Kilkenny set a new AMA national record, he was the fastest 500cc sit-on bike at the event and the bike he rode, the Cardboard Robot KX500, is the World's Fastest Dirt Bike.