Intake side 102mm / 4" Ramair Vent + Exhaust side Block Off + 102mm / 4" Upper Vent.
This system is in use in my own personal Z3 Coupe, which should be testament to how good it works. Very notable ramair effect at motorway speeds. Great intake sounds. Notably more torque in full rev range even when stationary.
Comes with 3 parts, you need to purchase locally or online and add your own piece (about 35cm lenght) of lightweight smooth innerwall 102mm / 4" air hose in between.
NOTE: If you want to use this with carbon intake manifold and Erik Eriksson Design 102mm / 4" CSL Horn or CSL Snorkels, then click on the variation to take only 2 parts that mount to bumper and click from the web store CSL parts separately into your bin!
