Motorcycle museum record
The RS 660 used a compact parallel twin derived conceptually from Aprilia’s V4 architecture to create a lighter middleweight sports motorcycle with modern electronics.
Museum plaque
A modern shift away from ever-larger superbikes toward accessible performance and lower mass.
The RS 660 used a compact parallel twin derived conceptually from Aprilia’s V4 architecture to create a lighter middleweight sports motorcycle with modern electronics.
Why it matters. A modern shift away from ever-larger superbikes toward accessible performance and lower mass.
Technical identity
This first expansion records museum-level specifications rather than pretending every year and market used one immutable specification.
Research starting point
Model-year specifications can vary. The museum keeps the stable historical interpretation here and leaves room to add exact variants, racing derivatives, engine codes and source-specific specifications later.