Roush's Focus RS consists of the most potent upgrades created for the popular hot hatch so far. Whereas the typical model pumps out 350 hp thanks to its 2.3-liter EcoBoost engine, Roush has upped that figure to an impressive 500 hp, thanks largely to a new engine block from Ford Performance and a number of ECU modifications.

Other upgrades enjoyed by the Roush Focus RS are new slotted brake rotors, an enhanced cooling system, Roush's own 3-way adjustable suspension with camber plates, forged 19-inch wheels and a set of Continental Extreme Contact Sport tires.