Britain's Scott Redding has given the updated Honda chassis the thumbs-up after receiving the upgrade for Jerez, but the Estrella Galicia 0,0 Marc VDS rider was struggling to find the extra pace needed to climb the times on Friday.

Redding ended the first day of free practice in 12th place on the combined times with a lap in 1m 39.967s leaving him 0.793s down on Movistar Yamaha's Jorge Lorenzo.

The 22-year-old, who set his best time in FP1, said: "My feeling with the bike is quite good, but we're struggling to find the time we need to progress up the timesheet and we don't really know why at the moment.

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"The bike is working well under braking and on corner entry, but it feels like we just lose a little bit when I first touch the throttle with the rear spinning.

"We're trying to find a solution for this ready for tomorrow, but the feeling with the new chassis is already good and we just need to make small improvements for the lap time now," he said.

"Overall it's been a positive first day, but we need to continue working hard tomorrow to make sure we go straight through to Q2."

The chassis upgrade is the same as that used by the Repsol Honda factory riders and Cal Crutchlow, who received the part at the Austin MotoGP.