To transport the air to the brake ventilation outlet, a suitable intake is essential. The M3/M4 doesn't have factory intake ducts in the front bumper like the M2 Competition, for example. Your car does, however, have two coolers on the sides behind the bumper! So why not use the available airflow efficiently?

To prevent the air from swirling randomly in the wheel arch, we developed a guide duct that can be installed with minimal effort. It guides the air around the wheel and connects it to the outlet via a 40 cm long hose (on each side). Our tests have shown that this prevents significant back pressure from building up behind the radiator, and even at extreme speeds and increasing pressure, the ducts do not pose any obstacles to the escaping air behind the radiator.

This item is also available in a kit with the matching outlets in the shop here 

IMPORTANT: Different models vary slightly in wheel position, coupled with different chassis geometries and wheel/tire combinations, making it impossible for us to cover all variants. In the worst case, the wheel could touch the ground slightly when fully turned (which should only happen when parking), which will not cause any tire damage. In this case, we would ask you to refrain from making the last 1/4 turns of the steering wheel.

Included in delivery:

1x air duct inlet left
1x air duct inlet right
6x fixing screw
6x washer

This article is suitable for

BMW F80 M3

BMW F82 M4