Front add-ons
Although much of the performance aftermarket seems to be visually fixated
on the back of the car, with spoilers and wings being the leading indicators of
performance (or at least a shallow pretense), managing airflow at the front of
the car, either by reducing lift or creating downforce (negative lift), is just as
important. As a rule, the more work the wing is doing in the back, the more
attention you will want to pay to the front of the car to ensure that the car
moves at speed. The front (which is where the steering input is generated),
provides as much grip and feedback as the rear.
Air dams
The air dam is the front valence mounted underneath your car’s front bumper.
If you have no idea what I’m describing, that’s okay. Nearly all modern cars
have integrated air dams in which the lower-front valance and bumper skin
are one seamless piece. Back in the mid-1980s and earlier, in the days of the
exposed steel bumper, this was not the case. The air dam’s job is to manage
airflow at the front of the car, guiding air to the radiator/air-conditioning con-
denser and/or front mount intercooler and away from the tires, where it would
cause lift. Many air dams also provide the mounting location for fog lights or
driving lights.
Today, one of the most common ways to give your car a “face lift” is the addition
of a new front bumper (with air dam) along with a matching set of side skirts
(the plastic extensions that bolt onto your car’s side sills under your doors) and
rear bumper. These body kits (consisting of the four pieces described and with
a front lip sometimes added as a fifth component) can be mixed and matched
from a number of different manufacturers for a unique look.