The young Frenchman beat Russia’s Evgeny Bobryshev in both motos to win his third Grand Prix in a row and move 88 points clear at the top of the standings.
Gautier Paulin sits in second overall but slipped further behind Febvre after finishing seventh in Loket as his fellow Belgian Kevin Stijbos claimed third.
It is also looking likely that a new champion will lift the MX2 title after leader Jeffrey Herlings dislocated his hip, ruling him out for the remainder of the season.
He wasn’t the only man to crash this weekend but Valentin Guillod was able to pick himself up from a few spills to finish first and second for his third overall GP win of the season.
Just 54 points separate the top six riders in the race for the MX2 Championship with five stops remaining meaning it could be one of the most dramatic title chases in history.