
Aprilia's upcoming V4superbike, the 200-horse RSV4, has been spotted testing recently at Mugello, by Moto Flash magazine.
The machine was first shown in public at a Piaggio Group conference last February.
It's pencilled in to join the world series in 2009, which means the maker will have to have the road bike ready by then.
Rumours suggest that former GP star Max Biaggi has been signed up to race the bike in its debut season.