The Aprilia RS 660 is a new kind of comfortable ... Aprilia have managed to squeeze two chunky exhaust headers, a cat packed Euro5 collector box and silencer neatly under the engine for optimum ...
The Tuono 660 shares a powerplant with Aprilia’s RS sport bike ... a quick tail tidy and an upgraded exhaust setup. Yet personally, I still prefer the RS 660 sport bike, which feels more compact ...