CSF F8x M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Fit Left & Right Side) button The most aggressive front lip

The most aggressive front lip for the E9x M3

which makes the knurling smoother and rounder

REV2 does not do any ethanol content analysis in its firmware

Direct bolt-on factory replacement

10 micron USA made Microglass fuel filter (Ideal for E85)

CSF F8x M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Fit Left & Right Side) button The most aggressive front lipLike the other cooling systems on the F8X, the factory auxiliary radiators do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand. The F8X platform is also almost a decade old with the newest examples being at least 5 years old. Over