While "part18" is just a data fragment, the full game includes:
: Hundreds of Driver Gear outfits to personalize your racer. Forza.Motorsport.7.part18.rar
: Over 700 cars, including the debut of the 2018 Porsche 911 GT2 RS and various Forza Edition cars with built-in performance boosts. While "part18" is just a data fragment, the