Ah, the Mercedes-Benz G Class. The G Wagen. The Gelandewagen. It's a relatively rare beast here in the U.S., especially in high-power G55 AMG form. We've never once doubted the awesomeness that is the AMG-badged G Wagen, and now the folks at Väth have decided to turn up the wick on the hardcore Benz SUV to the tune of 680 horsepower and 620 pound-feet of torque output increases of 180 hp and 104 lb-ft over a factory-fresh G55. It's pure insanity, and we wholeheartedly approve of the powertrain, at least.

They key components of the engine tuning involve things like a new intake manifold, a revised outlet system, new coolers and Väth's patented fuel cooler. Not only does this aid in the healthy power increase, but it allows the G55 to reach a top cruising speed of 165 miles per hour. To manage that added grunt, Väth has lowered the G55 by 1.4 inches, as well as fitted sport shock absorbers and beefy 15.4-inch sport brake discs.

Obviously, Väth has fitted the usual host of visual upgrades to the G55, including LED daytime running lamps, Xenon foglights, a sport exhaust system out back and 22-inch light metal wheels wrapped in 295/35 Yokohama ADV ST tires. Inside, carbon fiber appliques have been added to the standard leather trim, and a new sport steering wheel features Alcantara upholstery.