I've been looking for a helmet and most seem to stop at XL or XXL. For those of us with larger heads, consider looking into the Gath series of helmets. While not cheap, due diligence indicates they meet both US, and European standards for safety. Below is a link to one site that carries them. The average cost is between $145.00-$150.00. They do have a nice range of features, colors, and even several styles.
I can say though, being 62cm..... 62-63 cm seems to be the biggest helmet I've found.
http://www.murrays.com/52-15.html" onclick="window.open(this.href);return false;
Regards,
Brian

