Nothing says performance like a racing spoiler. We're not talking about the flimsy injection-molded ones on Hondas, but a real racing spoiler. Long before the import kids started bolting up kit spoilers, race car builders were fabbing the real things inside shops across the land. Stock cars and sports cars have had homebrew aero devices ever since airplanes were invented. These simple aerodynamic shapes were designed to do the opposite of a wing on an airplane: instead of taking flight, the wing pushes down on the car, increasing grip. The nature of a car's shape creates lift the faster it goes. Aerodynamic forces increase with the square of the speed, so forces pile up rapidly on a race car. Each car's aerodynamic proclivities are different, so the amount of lift at the front and the rear needs to be countered to a different degree. That's why you see spoilers on both the front and rear of a race car, and it's also why you see spoilers with adjustable angles.
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