Movistar Yamaha pair Jorge Lorenzo and Valentino Rossi are due to wrap up a private two-day test at Aragon on Wednesday, where the championship leaders were set to evaluate a new chassis.

Lorenzo cut Rossi's championship lead to a single point after clinching his fourth MotoGP victory on the trot at Catalunya on the YZR-M1, taking the win by less than a second from Rossi as they completed a second consecutive Yamaha one-two.

Both riders had been due to participate in Monday's official post-race test but with heavy rain prevalent, they decided instead to pack up and head straight to Aragon.

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"We were planning on trying a brand-new chassis with both riders in an effort to improve corner entry," said team director Massimo Meregalli.

"We also wanted to check on some small details, but it didn't make sense to test in these conditions.

"There were some heavy thunderstorms and rain conditions that made our plans for testing at Montmel? literally fall into the water.

"We will work focusing right now on the second part of the season and especially for Assen."