Thanks guys for the info. seems like there is only one product out yet which is the Hartge. Gruppe M looks like they will come up with an air intake system soon, but their exhaust system might take a while.
There are other exhausts but my guess is that they might take a couple of months devoloping.
Supersprint offers two versions of exhaust for your model, both sport and race. Please see the images as below. We will also have headers and metallic catalysts available soon. We use only the finest stainless materials, scientific testing for the best possible power and a deep smooth tone for that ultimate motorsport tone. The only question now is...sport or race??? Chris
Could you provide some more info on the difference between the two systems, construction wise? As far as I can make out from the pictures the sport has 2 cats in one package and the race system has just 1 cat powering 2 exhausts. Is this true? If so then how does this affect emission?
I'm assuming these will also fit under an M6 cause the M5 and 6 both share the same exhaust?