These pictures show 2007 MotoGP world champion Casey Stoner on a factory Honda for the first time.

The Australian made his factory RCV debut during the first day of post-season testing at Valencia in Spain on Tuesday.

Stoner made his premier-class debut on a satellite Honda in 2006, then raced for Ducati from 2007-2010, winning 23 races.

CLICK HERE for the latest pictures from the Valencia MotoGP test.