Originally Posted by brabusk8

DJ, I think in the other thread, it was mentioned that this the track package:

"AMG Track Package and AMG Aerodynamics package

AMG has two special packages to offer for enhancing driving dynamics even further: the AMG Track Package comprises 255/35 R 19 front and 285/30 R 19 rear sports tyres from Dunlop. They have been exclusively developed for the C 63 AMG Coupé Black Series, and they tangibly and measurably increase grip. Active rear-axle transmission cooling improves performance in punishing race-track conditions. The radiator is located in the rear apron and the airflow passes through it effectively.

What are known as flics are part of the AMG Aerodynamics package. They are made of genuine carbon fibre and located on the front apron. Also included in the package are a functionally tuned front splitter made of genuine carbon fibre and a fixed carbon-fibre rear aerofoil with an adjustable blade. Both components not only increase the lift at the front and rear axle; they also optimise the vehicle’s aerodynamic balance."

So I assume thats what these extra bits are