I think the trick is that you can't.
That doesn't mean that you couldn't cobble some together with enough $, time and machining skills. Probably a combination of all 3. There aren't any after market wheel choices for for the Triumphs so yours would have to come from some other bike or some other bike's application. If you follow the link, there is a comparison of wheel brands, it may help you in your quest.
http://www.sportrider.com/sportbike_...son/index.html
Josh
