Aeorsmith front man Steven Tyler and Boston Red Sox slugger David Ortiz have teamed up to support military veterans as part of the annual 'Ride For Our Heroes' next month in Boston.

No, the pair won't have to decide who steers and who rides b- ... in the back during the Sept. 24 ride. reports that Tyler has autographed a custom-built Dirico motorcycle with a baseball-themed paint job that will be raffled off as part of the event. Proceeds will benefit the Massachusetts General Hospital Home Base Program and the Red Sox Foundation.

The two charitable programs provide care to military members in need after returning from the conflicts in Iraq and Afghanistan. The ride begins at several starting points throughout the Northeast, and concludes at a Rider Appreciation Party at Manchester Harley-Davidson in Manchester, New Hampshire. Raffle tickets for the bike (pictured above) can be bought at the Home Base Program's website.

Tyler has recently been in studio with Joe Perry and the rest of the band, apparently working on their first new album in a decade. In a recent band-released video things seemed to be going well, but no finer details about the project have been released.