MMR Cotton panel air filters for BMW G8x Looking for a simple, warranty-friendly upgrade for your G-Series M-Car? One of the easiest ways to upgrade the breathing abilities of your S58-engined M2, M3 or M4 is with our pair of replacement performance panel air filters. Fitting is very straightforward and installed in around 10 minutes, and easily returned to standard, should you ever wish. Improve your S58's airflow, and power gains will follow. By removing the inevitable restrictions that the standard paper panel filters give, our panel filters allow a worthwhile increase in airflow through to the turbo. We've developed our own range of MMR Performance cotton gauze filters that easily drop into the OE airbox which provide excellent filtration properties, combined with instant performance increases and induction noise enhancements. Meanwhile, OEM-standards of design, quality, materials and construction means it fits like a factory part, lasts like a factory part. Sold as a pair. Put simply, we're confident that these are the best panel air filters you can buy. Features Worthwhile increase in power and torque. Sold as a pair. Fitting is very straightforward and installed in around 10 minutes. Easily returned to standard, should you ever wish. Completely washable and reusable. Specifically designed for the BMW S58. Kit complete with everything you need. Additional Information Sold as a pair. Fitting Information Fitting is very straightforward and installed in around 10 minutes, and easily returned to standard, should you ever wish. Vehicle Fitment Series M2 M3 M4 Chassis code G80 G81 G82 G83 G87 Model year M2 (2023+) M3 (2021+) M4 (2021+) Model variant All M-Cars Engine code S58