I have a Gruppe M induction kit for the Z4M which is as new and only covered 1.5 k.
This in my opinion makes the car breath and sound as it should and in my eyes is a must for all Z4M/ R owner IMO.
I am after £700 ONO
This in my opinion makes the car breath and sound as it should and in my eyes is a must for all Z4M/ R owner IMO.

I am after £700 ONO