The brake upgrade is more useful, mating six-piston calipers with 378mm discs at the front and giving the SLK a fighting chance of hauling off that obscene speed. The car has simply epic performance, and although the gearbox hampered the original car, this one has such a surfeit of power that even the automatic isn't the deal breaker it once was. Rev matching would be a nice touch on downchanges, especially from these speeds, but this is nitpicking on a grand scale when faced with a weapon of mass destruction like this.

The exterior mods, thankfully, are more subtle than the engine tuning. The LED light strips that have bred like rabbits throughout the tuning world are beginning to look just a touch passé, but that aside, the Väth is an epitome of understatement.

What is there, like the chin spoiler and diffuser, is perfectly produced in real carbon fiber, and there's more on the interior to give the SLK the truly badass feel that the performance deserves.

Väth might not come with the global reputation of the other big Mercedes tuners, but this SLK is an alluring package. It's expensive, but then tuning always is, and with the kind of monstrous power on offer here it's easy to see where the money has gone.

And there's a certain perverse appeal to this machine. It might be an SLK, but call it a hairdresser's car and prepare to get your head ripped off.

Väth V58

Layout
Longitudinal front engine, rear-wheel drive

Engine
5.8-liter V8, dohc, 32-valve. Forged pistons, stroker crankshaft, ported and polished cylinder heads, exhaust manifolds, sport catalysts, sport exhaust

Transmission
Seven-speed automatic

Suspension
Adjustable coilovers

Brakes
Six-piston calipers, 378mm rotors

Wheels and Tires
Väth alloys, 19-inch Yokohama Advan Sport, 235/35 (f), 275/30 (r)

Performance
Peak Power: 565 hp
Peak Torque: 517 lb-ft
0-60 mph: 4.1 sec.
Top Speed: 193 mph

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