That's fast and left in Russian by the way (which might upset the original Fast and Left).
These are the Anker Company guys from St Petersburg, Russia, whose Trackmaster Triumph we feature in Sideburn 42. Read about the T100C went from California, to Russia, via Poland and Finland (because it's so hard to import bikes into Russia) in Sideburn 42.
This track is Мототрек, Спортивное поле. 130Km, south-east from Moscow (the opposite side of Moscow from Anker Company in St Petersburg).
Russian flat track on a trick Trackmaster, who'd have thought it?