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 ...

Every category of 2-stroke engines has a place in my heart, from 49-500cc, except for the 2-stroke featured in this video because, well, I had never seen a legitimate 600cc 2-stroke dirt bike before.

One compromise that motocross riders don't want to make is speed. Dirt bikes have been getting faster and faster, with 500cc-plus bikes reaching speeds of 110 miles per hour. Surron's line of ...