German tuner GeigerCars has developed a supercharger upgrade for the 2015 Ford Mustang GT (Euro-spec).

The European Mustang GT with its V8 5.0-liter normally aspirated engine develops 421 PS (309 kW) and 530 Nm (390 lb-ft) of torque, but GeigerCars is willing to bump output to 709 PS (521 kW) and 706 Nm (521 lb-ft) by adding a supercharger.

As you would expect, performance numbers have been significantly improved thanks to the power boost which has decreased the 0-62 mph (0-100 km/h) sprint time from 4.8 seconds to 3.9 seconds while top speed has jumped to 190 mph (305 km/h).

The tuner also offers a GT Performance package encompassing beefier springs for the front suspension, uprated cooling system, Brembo brakes, stability control system, a 3.73:1 final drive ratio with Torsen limited slip differential along with some interior upgrades like Recaro seats and a Shaker Pro sound system.

GeigerCars is asking €18,900 for the supercharger kit and you can also add a stainless steel sports exhaust with valve control for an extra €3,900, along with 30mm lowering springs for €1,250 and uprated front & rear anti-roll bars priced at €650. The complete car with all of the aftermarket bells and whistles costs €82,900.

Gallery: Ford Mustang GT supercharged by GeigerCars to 709 PS

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