Tags: Motorsport Season.
The 1921 Grand Prix season saw Grand Prix motor racing finally fully recovered after World War I. The French Grand Prix was held in Sarthe Le Mans. It was the first GP in which a US make Duesenberg entered and the first in which hydraulically operated four wheel brakes were used (by Duesenberg). Ballot entered with mechanical four wheel brakes. The first Italian Grand Prix was held in Brescia.