Supershaft

Has anyone used and have any positive experience with any splitters, wings, diffusers that work and aren't cosmetic, and what company, or who made them ?

TrueGS300

APR performance makes aero parts, wings etc. that are functional, but you pay a high price. Top of the line and used by racers for real downforce and effects. I don't think there's any "street" gains to be had other than looks. Anything you add is extra weight and more drag.

firelizard

iTrader: (1)

RS Future comes up a lot in the time attack community- they've produced custom aero for a lot of race cars. They'd be my first call if I were building a race car.

Ab-Flug is the only company that I can think of that makes an off-the-shelf splitter and diffuser, specific to the GS/Aristo, that seem built to be functional.

Supershaft

I'll look into both of them, thank you Truegs and firelizard

captainva

iTrader: (1)

@EuroWill knows all about Abflung and has their front and rear splitters on his car. He's a great resource