Swiss tuner cartech.ch has whipped the wraps off of its modified Jeep Grand Cherokee Trackhawk, handing the American uber SUV more power and extra kit.

According to the Chur-based company, the standard 6,2-litre V8 mill’s output figures of 522 kW and 875 N.m of torque (the latter on tap from 4 000 r/min) has been increased by means of a performance kit sourced from fellow Swiss company O.CT Tuning. Thanks to this package, the supercharged petrol engine now churns out a whopping 602 kW and 950 N.m.

Although performance figures for the tweaked Jeep Grand Cherokee Trackhawk have yet to be announced, the standard version (see local pricing here) of the performance SUV isn’t exactly slow. Jeep claims the range-topping Grand Cherokee will reach the 100 km/h marker from standstill in a brisk 3,5 seconds, before reaching a top speed of 290 km/h.

In addition to these mechanical upgrades, cartech.ch has replaced the SUV’s stock exhaust system with an upgraded item from German manufacturer NAP Sportauspuff Manufaktur GmbH. Now featuring a flap control setup, the new exhaust adds to aural drama to the package. 

Visually, the most notable exterior revisions are the 22-inch Candy Apple Red “performance” aluminium alloys, wrapped in 305/22 Michelin rubber. Look behind the spokes and you’ll notice golden yellow 400 mm Brembo stoppers fore and 350 mm brakes at the rear.