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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
Model: X3 M / X4 M including Competition
at cruising speeds
MR12volt MOST integration
BMW 2 Series F22 F23 M240i Manual Transmission only
Karbonius Carbon Fibre Airbox OEM Style - BMW E46 M3 / Z4M Civic (FK8) Model: X3 M / X42x2 Gloss Only The CSL Airbox is one of the most demanded improvements among BMW M3 E46 enthusiasts. That is both for performance gain, and for the sound it brings to the car. On the other hand, it is a laborious, time consuming and expensive modification. For those who are looking for similar sound to CSL airbox, but do not look for HP gain, we have developed the Karbonius OEM Style S54 airbox. It is a simplified version of CSL airbox, that, apart