Thomas Luthi broke the Kalex dominance of official 2014 Moto2 testing by setting the fastest lap time on day two at Jerez.

The Interwetten Suter rider, whose 2013 title hopes were wrecked by pre-season injuries, conquered the fifth day of official 2014 testing with a time of 1m 42.515s, set during he opening Wednesday track session.

That lap time was under the official Jerez pole record from 2011 and 0.25s quicker than Esteve Rabat's Tuesday best.

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New Marc VDS signing Rabat was just 0.095s behind Luthi on the timesheets with team-mate Mika Kallio completing a top three covered by 0.133s.

Honda Team Asia's Takaaki Nakagami was again a contender in fourth (+0.358s) with Tasca Racing's Alex de Angelis the next best Suter after Luthi in fifth (+0.561s).

World Supersport champion Sam Lowes slipped from fourth to sixth - but was again the top Speed Up rider and lowered the gap to the top from 0.702s to 0.581s.

Julian Simon and Sandro Cortese were a closely matched seventh and eighth, with Johann Zarco putting the new Caterham Suter into ninth (+0.701s).

"For sure we still have some work to do to become faster and understand the geometry of the chassis better, but step by step we are setting up the bike well," said Zarco.

Moto3 world champion Maverick Vinales (Pons Kalex) completed a top ten covered by 0.711s.

Testing concludes on Thursday evening after which there will be one more official test, again at Jerez, prior to the start of the 2014 season.