Josh Hill testing a YZ450F. Click for a larger version.

Over the last couple days, Josh Hill has been spotted riding a YZ450F around tracks in So. Cal. Sure, that’s not entirely uncommon among 250F pilots, since the 450s are a lot less high-strung than a heavily-modified 250F, and require far fewer engine rebuilds. But in this case, the word is that he’s actually testing on it, and there’s a good chance that he’ll jump up to the big-bore class for the final two rounds of the National series; in Texas, and at Glen Helen

And just to put the conspiracy theories to rest before they get started, no, Josh isn’t jumping up to help out Grant Langston’s chances at a National title. Grant seems to be doing a good job of supporting himself there.