Understanding why people sometimes think that what they have isn’t enough despite the evidence suggesting otherwise is a very tricky thing to figure out. But to each his own, and you just have to shrug your shoulders and accept it.

This particular Mercedes C63 AMG is a perfect example of that. Already packing an impressive 451 horsepower, the owner of this C63 AMG, Keith Brantley, thought that he could get in touch with a tuning company and squeeze a little more juice on his high-powered Mercedes. So, he hooked up with Modern Horsepower and gave them specific instructions: give me more ponies to play with.

The result, as you can expect, is arguably the fastest C63 AMG on the planet. Dubbed the “Red Brown Arrow”, MHP gave the C63 its very own Stage 3 CMR package, giving the vehicle’s naturally aspirated V8 engine an output of 652 horsepower and 595 lb/ft of torque. If you’re not doing the math, that’s an increase of over 200 horsepower and 152 lb/ft of torque.

But that’s not the end of it.

Continued after the jump.

  • 2011 Mercedes C63 AMG "Red Brown Arrow" by Modern Horsepower
  • Year:
  • Make:
  • Model:
  • Engine:
    naturally aspirated V8 engine
  • Horsepower @ RPM:
    900 horsepower
  • car segment:

The aftermarket specialist also added a nitrous oxide system, spiking its output even further to 900 horsepower, giving the “Red Brown Arrow” enough juice to cross a quarter-mile in just 10.41 seconds with an exit speed of 135.27 mph, which it set a few weeks ago at the Maryland International Raceway.

During its timed-runs, the “Red Brown Arrow” was able to hit 0-60 mph in just 3.04 seconds, 0-100 mph in 6.19 seconds, and go from 60-130 mph in 6.59 seconds.

Oh well, maybe some people just have a needless obsession with pushing the boundaries of their car to unforeseen heights. And here’s the clincher: Keith Brantley isn’t satisfied. Turns out, he wants to give his 900-horsepower rocket a full customized tuning upgrade, complete with new wheels, tires, and in his own words, “slightly larger nitrous jets”.

Now that’s something we’d like to see, but until then, here’s a little taste of the action.

Kirby Garlitos
Automotive Aftermarket Expert - kirby@topspeed.com
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read More
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Show Comments


  (407) posted on 04.13.2011

Whoohoo! I am really loving that tire burn on this one. They must have really spent a large amout of cash just to get that amount of power

  (210) posted on 04.12.2011

Yeah, me too. I am really amazed at their work on this one. They were definitely able to get more power out of that engine. And the looks of the car are also worth mentioning.

  (466) posted on 04.11.2011

Wow! I m quite impressed with the engine performance of the car. The v8 technology that produces 652 hp is incredible. It seems that Modern Horsepower make an awesome tuners for this car.

  (683) posted on 04.11.2011

Well, that one is definitely a great way of spending his money. And he still isn’t finished just yet, you say? I can’t imagine how this car would turn out in the end.

  (273) posted on 04.11.2011

I certainly agree on you dude. The tuners would be responsible for the incredible performance. BTW, I like how this car blast while drive testing.

  (553) posted on 04.11.2011

Mercedes C63 Red Brown well, Looking forward to its main functionality brings the horsepower experience amazing and great performance ability to travel in a very smooth way of riding.

  (1211) posted on 04.11.2011

Wow, that guy is definitely speed crazy. But who can blame him? He has got all the moolah that he can use to turn his car into a beast.

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