The trek was due to kick off Sept. 17 in Atlanta but will now get underway in early October.

Hard rock act Helmet has been forced to push back the start of its first tour in seven years after group leader Page Hamilton broke his collar bone in a mountain biking accident. The trek was due to kick off Sept. 17 in Atlanta but will now get underway in early October. An updated routing is still being finalized.

Hamilton's accident has also necessitated moving the release of Helmet's new Interscope album, "Size Matters," from Sept. 14 to Oct. 5. Tracks from the set can be sampled on Helmet's official Web site.

Beyond Hamilton, the new incarnation of the group features guitarist Chris Traynor, former White Zombie drummer John Tempesta and former Anthrax bassist Frank Bello.

Helmet's last album was 1997's "Aftertaste," which peaked at No. 47 on The Billboard 200 and has sold more than 132,000 copies in the United States, according to Nielsen SoundScan.