BMW E89 Z4 28i (N20 2.0l 4 Cyl. Turbo) 2011 -> Full Supersprint exhaust - Dyno testing

Supersprint full exhaust system including:

- n. 987121 Downpipe kit + Metallic catalytic converter.
- n. 987102 Front exhaust
- n. 987113 Central "Y-Pipe"
- n. 987106 Rear exhaust OO80