McLaren MP4-21 - front chassis winglets 21 October 2006
McLaren continue their aero development into the final round in Brazil with two horizontal, pointy winglets (red arrow), one either side of the chassis' foremost section. These slightly odd-looking elements serve a similar function to the similarly-located devices seen on the Renault this season. They improve the car's front-end balance, by improving airflow quality in this area and adding a small amount of downforce. As on the R26, the elements help in stabilising the front of the car over the frequent bumps found around the Interlagos circuit.