Aprilia's Marco Melandri had the chance to try the new seamless gearbox for the first time at Mugello in Italy on Friday after the upgrade had previously been tested by his team-mate Alvaro Bautista following the Spanish MotoGP at Jerez.

Melandri and Bautista also experimented with new chassis set-ups during free practice as they finished 26th and 23rd fastest respectively on the combined times, and also tested other parts including an engine upgrade and new fairing and saddle components.

Although Melandri was positive over the seamless gearbox, he is still seeking a clear direction with the chassis.

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"Today I was able to try the new seamless gearbox for the first time and it works well. Aprilia did a good job," said the Italian, who lapped in 1m 51.800s.

"As for the chassis the situation hasn't changed and I had the same problems that have continued to slow me down since the beginning of the year. So tomorrow we'll try to work more on the chassis to improve."

Bautista was also encountering problems with the Aprilia running wide into turns but is hopeful of making progress on Saturday.

"This morning I tried a more tapered saddle with new ergonomics which make me feel a bit more comfortable on the bike, in addition to the seamless gearbox and an engine evolution," said Bautista, who was significantly quicker than his team-mate, lapping in 1m 49.741s.

"On the gearbox I had the same good feelings as the tests at Jerez so I'm satisfied. In the afternoon I tried a smaller fairing, which performed well in the wind tunnel and on the track it also seems to provide some advantages in terms of more agility.

"The bike still tends to go wide coming into turns but tomorrow I'll have both the bikes fitted with all the changes so it will be easier to focus on chassis comparisons, which is the area where I think we have the most room for improvement."