Naked Aprilia V4 'Tuono' spied at Mugello

New shots of the bike in testing beef up the promise of a naked V4

APRILIA have been spotted testing this naked V4 at Mugello, strengthening the rumours that they'll launch a V4 'Tuono' before the end of 2010.

From the pictures it looks like it's based almost exactly on their top of the range superbike, the RSV4 but it's hard to tell if there are any radical changes. Check out the video of the bike being ridden by an Aprilia test rider at Mugello.