Bmw B58 downpipe

* Stainless steel
* Tig welded
* lambda bungs
* Mini cat / cat fooler optional extra 
* Direct bolt on
Colab tuning downpipe
Compatible with B58
BMW F32, F33, F36 - 440i 
BMW F30, F31, F34 - 340i 
BMW F22, F23 - M140i, M240i