Aussie Casey Stoner will be back on a Honda in 2011 for the first time since his rookie season with the LCR effort in 2006.

The first piece in the mega MotoGP puzzle that is the 2011 silly season has fallen into place, with Australia’s 2007 MotoGP World Champion confirmed to be joining Honda on a factory machine.

Honda Racing Corporation today confirmed Stoner will become a factory Honda rider in next year’s MotoGP World Championship, however what team it will be in remains a mystery.

Current factory regulars Dani Pedrosa and Andrea Dovizioso are expected to remain under contract to HRC as well, with Stoner making a third factory effort – one of the three expected to be on a Red Bull-supported bike.

“We are very pleased that Casey will join Honda again next year,” confirmed HRC vice president Shuhei Nakamoto. “Clearly he is one of the top riders in MotoGP and he will bring valuable speed and experience to our team.

“In the factory Honda squad we already have two very strong and experienced riders in Dani Pedrosa and Andrea Dovizioso who are performing very well and currently hold second and third positions in the 2010 World Championship.

“HRC hopes also to retain these two riders for next year – giving us what would be a truly formidable line-up.”

The Australian 2007 World Champion, who rode in the Honda LCR Team in his debut MotoGP season in 2006, will rejoin Honda after four seasons with Ducati. Honda’s complete factory team line-up for 2011 will be officially presented later in the season.

It’s expected that Italy’s nine-time world champion Valentino Rossi will replace Stoner at Ducati alongside American Nicky Hayden, while current Superbike World Champion Ben Spies will replace Rossi on the Fiat Yamaha factory team alongside world champion elect Jorge Lorenzo.

Ducati announced right before Honda’s announcement that Stoner would be leaving the team in 2011.

“I would like to thank Casey on behalf of our fans and our sponsors, but most of all on behalf of all the people working at Ducati,” commented Filippo Preziosi, Ducati Corse general director. “The victories and emotions he gave us, rewarded all the hard work and sacrifice we made.

“In these four years together we have had a lot of great moments. Securing the 2007 MotoGP World Championship title and the victory at Mugello in 2009 were moments that we will never forget. In Casey we not only found an incredibly talented rider, but also an honest and loyal guy and that’s why there will always be a strong and sincere bond between us, even as a competitor.”

Although he is yet to comment on his future at HRC, Stoner was thankful to Ducati for giving him the opportunity on the factory effort back in 2007.

“I must thank Ducati for giving me such a great opportunity to race and win with them over these past four years” commented Stoner. “They took a gamble when they signed me at the end of 2006 as I was unknown, but as we worked together we were able to win a championship, many races and challenge for the championship in the last two seasons.

“I have now decided to move on and I will have new challenges in the future and different obstacles to overcome, but I will not forget these years with Ducati and the people I have had the privilege to work so closely with. So a big thanks to Ducati and all our sponsors who we have shared success with while achieving lifelong goals.”

Stoner has suffered a spate of front-end crashes during 2010, derailing his championship hopes as his first victory of the season continues to elude him.