Karbonius BMW E46 M3 S54 Carbon Fiber OEM Style Airbox carbon fiber Under your warranty period

Under your warranty period

Upgrade the rear of your E92 M3 with a full carbon fiber CSL style trunk from Darwin Pro

Our free flow design allows for maximum air flow

-OEM Functionality

upgrading to the CSL airbox is both labor intensive and time-consuming

Karbonius BMW E46 M3 S54 Carbon Fiber OEM Style Airbox carbon fiber Under your warranty periodKit Includes: Airbox CNC machine made items of anodized aluminum Stainless steel screws Certificate of authenticity The M3 CSL Carbon Airbox is one of the most demanded improvements among E46 M3 enthusiasts. This is due to the performance gain of course, but even more enjoyable is the intake sound it brings to car. Unfortunately, upgrading to the CSL airbox is both labor intensive and time consuming; requiring a number of additional parts, wiring, and