Since the late 1950s, adventurers and dirt-biking enthusiasts have relied on gas-powered mini bikes to blaze rocky trails across the country. Motor-biking fanatics made the very first batch of mini bikes out of spare parts found in their garages, which became popular as pit bikes and are mainly used to travel in the pits when racing. With their high speeds and ability to maneuver on a variety of surfaces, gas-powered mini bikes are widely admired by drag racers. The earlier versions represent the perfect combination of power and exhilaration with small four-stroke, flathead engines, and crank-mounted centrifugal clutches. The cost-effective recreation and easy availability of spare parts, such as suspensions, carburetors, and exhaust packages leave a rich market for customized gas-powered dirt bikes. If you are looking for something resembling sport-motorcycles, a gas-powered mini pocket bike is an excellent addition to your collection. The power usually comes from a 39 cc to 50 cc two-stroke engine, with a maximum of 6 hp. With its aerodynamic body, it can reach a speed of up to 40 mph. You can find a large inventory of fully modified gas-powered dirt bikes on eBay.