After Hungary's high-downforce track, the Formula 1 field take on two low-drag, but very different, races: Spa and Monza.
Where Monza is predominantly straights, Spa is largely high-speed curves, so the cars do need downforce to negotiate some of the toughest corners on the calendar. However, as they are tackling these turns at such high speeds, the cars can produce enough downforce with relatively small wings.
As a result, teams develop special wing packages just for the Belgian Grand Prix. Because it's the rear wing - and all the drag it creates - that sets the car's top speed, it gets trimmed the most. Some 5-10cm is taken out of its depth, reducing its power.