De Espona has a Vincent, an old motorcycle similar to Norton. They also have an Indian, a BMW and a Moto Guzzi, which might satisfy. But all of them paying, although their models cannot be found at Turbo Squid anymore. http://www.deespona.com/3denciclopedia/categoria_vehicles.html and click on cycles & motorbikes. I've got a couple of free Harleys and a chopper. Or you can try this one: http://home.tiscalinet.ch/zoffbred/poser3d.html Helmet, you should look for Memorial Racing Jumpsuit.zip, which has a racing helmet without a visor inside. For Poser. Or try http://www.buckrogers.demon.co.uk/3d/3d.htm.

-- erlik