Autotecknic Dry Carbon Brake Cooling Ducts - BMW F87 M2 COMPETITION M2 CSAUTOTECKNIC DRY CARBON BRAKE COOLING DUCTS F87 M2 COMPETITION M2 CS Part # BM 0419 AutoTecknic Dry Carbon Brake Cooling Duct Set is now available for retrofitting to your F87 M2 Competition and F87 M2 CS bumper, just like the ones found on the M2 CS Racing. As a leading name in the carbon fiber industry, AutoTecknic creates distinctive and effective pieces that are second to none. Keep your brakes cool on the street or track with the AutoTecknic Dry