Yamaha's Ben Spies rode more laps than any other rider during the two days of 1000cc testing at Valencia.
Third fastest behind Repsol Honda riders Dani Pedrosa and Casey Stoner on both days, Spies improved his best lap time by a second to finish 0.5sec from Pedrosa at the close of 2011 track action.
"This is testing so we never got close to the limit with the bike; it's about riding at 90% consistently to test the motorcycle," said Spies after day one. "When we get the full package next year in Sepang we'll go closer to the limit. I can't complain about the engine power though, we don't need any more…"
Despite team-mate Jorge Lorenzo missing the test, Spies' workload - 73 laps on day one, then 75 laps on day two - meant that the factory still got through its entire test programme.
Spies spent the sessions working through two differing engine specifications and a number of frame and geometry settings.
“It's been a long two days,” said Spies, who narrowly lost out to Stoner in Sunday's season finale. “We had a lot of work to do with Jorge not being here but we've got through everything. I think we got the guys working in the right direction, we're still quite a way from Qatar and what we'll be racing with, but we've got a good idea of what we need to work on.
"There's a lot of potential in what we have so they'll go back to Japan now to work on it for a couple of months and we'll see what we have as a package next year. The team and engineers have worked really hard for the last couple of days so a big thank you to them.”
“Ben did a really good job; I've never seen him so focused in a test," commented Team Director Massimo Meregalli. "It's the best way to start the new season.”
The Sepang test starts at the end of January.