Biaggi had been 0.7secs behind former Alstare Suzuki team-mate
Yukio Kagayama during the official test, but found a further 1.1secs during his second three-day test on the new 1098R - putting him 0.1secs inside
Troy Corser's official circuit record, set during the 2007 WSBK event.
"We did really useful work," said Biaggi. "I had the opportunity to get some feeling with the twin-cylinder engine, and everything worked fine. I got a good time and I was fast during the race simulations. I focused my work on finding the best set-up. I'm really satisfied about the front of the motorbike while we must work on some rear vibration still. We can work on it during the test in Qatar."
Team-mate Xaus was just 0.2secs slower than Biaggi and, after campaigning an underpowered satellite-spec 999 for the past two seasons, is enjoying 1200cc power.
"I'm really satisfied with the motorbike and the feeling I have found with it," declared the Spaniard, a race winner in 2007. "The new motorbike has a powerful engine compared to the 999, and it allows me to come out of bend really fast. I think I've already found a good set-up and I think I'm ready to run the race on this track if the weather will be the same of the last six days. I have worked but I enjoyed it as well. Driving this motorbike is a pleasure."
"During the past six days we worked hard and we did some race simulation also," confirmed team manager Marco Borciani. "Furthermore we have found the good set-up for both the riders. We leave Australia really thrilled and we feel confident about our big potential."
With factory Ducati team leader
Troy Bayliss recovering from injury, both Biaggi and Xaus have a real opportunity to lead the 1098 challenge - at least during the opening rounds.
Alstare Suzuki also remained in Australia for extra testing this week.