The name of this bike is a reference to the streetfighter style of motorcycle common in urban areas. A streetfighter is a sportbike stripped of its fairings, often with an aftermarket headlight. They are commonly used for stunting and are an example of a naked bike.
In the PSP version of the game, the pitch sound of the Streetfighter is lower than the PS2 version. It is very noticeable.
Chronologically this is the first vehicle driven in the GTA III Era.
It looks very similar to another motorcycle from the HD Era the Vader.