Why would someone want to upgrade a 451HP Mercedes-Benz C63 AMG remains a mystery to us, but the following car is a good example of the level of performance a C63 AMG can reach with the right aftermarket parts and some very deep pockets. Two years ago, owner Keith Brantley got in touch with aftermarket specialist Modern Horsepower (MHP) and ordered a complete transformation of his C63 AMG.

The result is the “Red Brown Arrow”, allegedly the fastest C63 AMG in the world. The car sports MHP’s Stage 3CMR Package, which means the car is completely modified mechanically. The reworked naturally-aspirated V8 engine develops 652 horsepower and 595 lb-ft of torque (807 Nm), a gain of 201HP and 152 lb-ft (206 Nm) over the stock car.

Add to that a nitrous oxide system that lifts maximum power to 900HP and the result is a C63 AMG that can do a 1/4 mile in 10.41 seconds with an exit speed of 135.27 mph (218 km/h). This was achieved on March 25 at the Maryland International Raceway, with only a 125HP shot of nitrous.

On the record run, the car went from 0 to 60 mph (96 km/h) in 3.04 seconds and from 0 to 100 mph (160km/h) in 6.19 seconds. Furthermore, the 60 to 130 mph time was 6.59 seconds, 1.2 seconds faster than a Lamborghini Murcielago LP640. Among the Red Brown Arrow’s “victims” are a Corvette ZR-1 and a Porsche Carrera GT at the Top Gun Run standing mile event.

One would think that the owner should be pleased with a supercar-beating C63 AMG. Well, he is, except he wants to “complete the package with some cams, better tires & wheels, and slightly larger nitrous jets and hopefully set the bar a little higher next time out.” Scroll down to see the 900HP Mercedes-Benz C63 AMG in action.

By Dan Mihalascu

VIDEO