TZ 750 is an icon. Bad to the bone. Where it was allowed to race it dominated for years. A top ten in the history books. The roots of the Vmax-4 snowmobile.
Did you know Kenny Retired from Yamaha and built his own World GP Bikes Proton. They are really cool .. State of the art for say early 1990 .. Fuel Injected very manage mid range power.. The rules favored 1,000 CC four strokes eventually
Kenny Roberts helped to Develop the Lectron Carbs.. They claim it makes most any small engine perform more responsively .. at different altitudes with out adjusting plus better MPG