In 1968 Yamaha introduced the DT-1, the original dual sport or enduro as it was called back then. The DT-1 created a market in the US for on/off road capable bikes that weren't just street bikes that just looked rugged. Kawasaki followed with their line of enduros including the 100cc two stroke G4TR Trail Boss produced from 1970 to 1978. Find this highly original 1970 Kawasaki Trail Boss for sale in Spokane, WA for $900 via craigslist.