The Aprilia RSV4 has been labelled by some as more of a MotoGP bike than World Superbike machine.

Nevertheless, Marco Simoncelli - who took a stunning podium finish on his WSBK debut while riding the Aprilia as a wild-card at Imola late last season - says the 1000cc V4 remains a much easier beast to tame than his new 800cc Honda V4 MotoGP prototype.

"The Superbike is quite different to the MotoGP bike," Simoncelli told, when asked why he was able to adapt so quickly to the WSBK four-stroke.

"It is easier to arrive at 95% with the Superbike. Here in MotoGP it is more difficult because the limit of the bike is higher.

"I am only at about 80% of the limit of the MotoGP bike at the moment," added the Italian star, who has completed two MotoGP test sessions, with three more remaining before his race debut.

The former 250cc world champion, who finished 6.5sec from WSBK victory in race two at Imola - a loss of 0.3sec over the 21 laps - estimates he still needs to find two seconds a lap to threaten the MotoGP frontrunners.


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