Valentino Rossi became the first MotoGP rider to exceed the six-engine maximum last season, as he started from the pit lane at Aragon when Ducati mechanics bolted the seventh engine of the season into his GP11.

What a difference a year makes.

Rossi and Nicky Hayden's GP12 machines may be slow, with finicky front and rear grip in the dry. But their Desmosedici engines are the most durable in MotoGP.

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