[Christ]

Ok, so I feel like I need to interject here.

Once again, there is this inherent vocabulary problem with the word "Aerodynamic". To straighten it out, I'll introduce the idea that "aerodynamic" doesn't necessarily mean "less draggy" or "lower Cd", it means exactly what it says - Aerodynamic.

Whatever part is labeled as aerodynamic (typically) is designed to alter the aero characteristics of whatever it's being installed on, be it for one reason or another, to a specific end, but not necessarily the end we're headed for.

Increasing negative lift on a vehicle is often a highly desired modification... aero kits can do this - by making the vehicle more "aerodynamic".

It's not a buzz word, or any incorrect sense of usage, it's that people are being narrow about terminology in general. To say that something is "efficient" doesn't necessarily mean it gets great gas mileage, right?

So to say something like "It's not aero because it doesn't improve the Cd..." is just a fallacy.