with motorcycle stunt riding and perhaps hooliganism on public roads, can imply higher performance than the sometimes more tame naked bike, which in some cases is a synonym for a standard motorcycle. Others define naked bikes as equal in power and performance to sport bikes, merely absent the bodywork. The same period that saw the naked and streetfighter variants of the sport bike theme also had a resurgence of the versatile standard in response to demand for a return of the Universal Japanese Motorcycle. Supermoto-style street bikes, constructed with a completely different set of priorities than a road racing style sport bike, have also entered the mainstream, offering another option for riders seeking a spirited riding experience. The nickname muscle bike has been applied to sport bikes that give engine output a disproportionate priority over braking, handling or aerodynamics, harking back to the Japanese superbikes of the 1970s. A similar sensibility drives the so-called power cruiser motorcycles, based on cruiser class machines but with horsepower numbers in league with superbikes. See also Sport moped Outline of motorcycles and motorcycling References Motorcycle classifications