For the M4 CS, BMW has pushed output of the 3.0-liter turbocharged inline six-cylinder engine to 454 horsepower and 442 pound-feet of torque.
Compared to the base version of the M4, the CS features an additional 31 horses and 36 pound-feet of torque.
According to BMW, the M4 CS can hit 60 mph in 3.8 seconds and has a top speed of 174 mph.
Tuning for the adaptive dampers, stability control and torque vectoring rear differential are shared with the M4 Competition Package.
Unlike the normal M4 that's available with both a six-speed manual and seven-speed dual-clutch gearbox, the CS is only offered with the latter.
To trim weight, BMW cut various comfort and tech options from the CS. For example, a sound system with fewer speakers is installed. Automatic dual-zone climate controls have also been replaced by a manual, single-zone setup.
Carbon fiber reinforced plastic door panels have also been installed that do not have map pockets or armrests.
The center armrest has also been cut from the M4 CS interior to save weight.
BMW says it will only make around 3,000 examples of the M4 CS for worldwide consumption. Of those, less than 1,000 will come to the US spread across the 2019 and 2020 model years.
The 2019 BMW M4 CS begins at $103,100, not including $995 for destination.