Marc Marquez, new leader of the 125cc World Championship after an extraordinary four wins in a row, kept his stranglehold on the two-stroke class during testing at the new Aragon circuit.

The Ajo Derbi rider shaved almost one-second off the Tuesday times and, despite concluding testing at lunchtime on Wednesday, left Aragon with an advantage of more than eight-tenths over nearest rival Pol Espargaro. Espargaro's Tuenti Derbi team-mate Efren Vasquez was third.

"Today, we went out early because we now know the circuit and wanted to test different adjustments that we were analysing with the team yesterday afternoon," said Marquez. "We also tried a different gear ratio and found a good solution. We were able to keep up the pace well, testing some things and rejecting others and we eventually finished after 37 laps. That's not many but we've tested everything we wanted to well because it's better to do few laps but do them well.

"Since a few races ago, we've managed to get a good base set-up on the bike and that helps us to quickly feel comfortable. The team knows me very well and knows how to rapidly give me what I need. We are progressing in every practice and I have felt comfortable on both days in Arag?n. I think we've done a good job, so when we come here in September [for the first ever Aragon GP], we'll have it fairly clear".

Marquez, unbeaten since his first ever GP victory at Mugello, will be chasing his fifth in a row at the German Grand Prix on June 18.