I saw a small test ride this summer in one of the magazines of a bike from I believe a New Zealand company whose name I forgot. Prices were around 5-6 thousand. It is available with a steel or Ti frame. It uses downhill mountainbike components for for the suspension, brakes, wheels, and other stuff to keep it super light. I think the engine options were Honda 100cc and 150cc from CRFs. Did anyone see this and remember the name? It's not the Sikk Trail Bike. I've checked that out and while it's much cheaper the parts and weight don't compair.