
1) British monthly magazine
Found on
https://www.crosswordclues.com/clue/superbike
[magazine] SuperBike is a monthly British motorcycling magazine. In addition to motorcycles, the magazine features reviews of race bikes, dirt bikes, and others. ==Features== The magazine generally features a mix of bike and product tests, some technical features, long term test bike reports as well as race features from WSB, BSB and MotoGP...
Found on
http://en.wikipedia.org/wiki/SuperBike_(magazine)

(from the article `motorcycle`) ...power capacity and engine displacements, the other five classifications are child bikes, trail bikes, road bikes, touring bikes, and racing bikes. ...
Found on
http://www.britannica.com/eb/a-z/s/187

A high-performance sport bike with a big engine (generally 1000cc and larger)
Found on
https://www.encyclo.co.uk/local/22370
No exact match found.