Rated at 548hp (408kW) and 510lb-ft (785Nm) of torque, the 6.2L V8 in the RENNtech C63 AMG tops the factory-tuned model by about 20%, or 97hp (70kW). The power gains come from an all-new exhaust system, including stainless-steel long-tube headers, track-oriented pipes and mufflers plus a reworked ECU. To contain all the extra power RENNtech also upgrades the suspension and fits a new brake package.
Fully adjustable dampers with adjustable camber settings mean the vehicle really can be tuned for the track, or multiple tracks, giving this car a sporting potential many overpowered tuner-cars lack. The upgraded brake package fits right in line with the track-day aspirations of the rest of the car, offering tremendous brake torque and fade resistance with 15.2" two-piece rotors and custom RENNtech calipers. Stainless-steel braided lines ensure solid pedal feel while a pair of carbon-fiber brake ducts help improve ventilation to keep braking consistent lap after lap.
For more from RENNtech, check out their upgraded SLR 722 and the recently-previewed SEMA Pikes Peak GLK.


Reader Comments
Thu Sep 4 2008 7:39 PM
AMG55 says
As everyone suspected, a simple ECU tune will release what its bigger brothers (E63, CLK63,SL63 etc) all have..
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