BMW F20 / F21 M135i (320 Hp) 2012 -> Full Supersprint exhaust system - Dyno testing

Supersprint full exhaust system including:

- n. 988521 Downpipe kit + Metallic catalytic converter
- n. 988612 Front pipe
- n. 988613 Centre pipe
- n. 988624 Rear exhaust Right O100 - Left O100