Nicky Hayden worked on the suspension and set-up of his Drive M7 Aspar RCV1000R during day two at the Sepang II MotoGP test.

The popular American was 14th fastest as he boosted his time from Wednesday, setting a quickest lap in 2m 02.088s.

But Hayden finished behind the NGM Mobile Forward Racing FTR-M1s of Aleix Espargaro and Colin Edwards, who were second and 13th fastest respectively, with Yonny Hernandez on the Open class Ducati also lapping quicker than the 2006 world champion.

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The Honda rider, though, was taking some positives from the second day of the shakedown in the Malaysian heat as he continues to develop the new machine.

"The track is still pretty dirty but the conditions today were slightly better than yesterday, when it was particularly slippery - especially in turn one," said Hayden.

"It was still really hot but we were able to get plenty of work done, mainly on the suspension and general set-up. We also worked a bit on the gearbox although at the moment there is not much for us to try in this area and it is quite time consuming work.

"The feeling today was pretty good, we improved the lap times and hopefully we can continue to do that tomorrow through a combination of improving the bike and also my riding," added Hayden.

"We have a couple of things still to try tomorrow as part of a long run."

Hiroshi Aoyama, who completed more laps than any other rider on Thursday (72) was 18th fastest with a time of 2m 02.786s.