CSF Racing Twin Charge Air Cooler Kit Polini Motori at EICMA 2025: Where Tradition Meets Electric Innovation. BMW F1X M5 & M6 Twin Charge Air Cooler Set Crinkle Black Finish The S63 4. 4L Twin Turbo V8 in the BMW F1X M5 M6 is an absolute monster that responds incredibly well to bolt on upgrades, larger turbos, and performance tuning. Tuners quickly found that increasing power on the S63 pushed charge air temperatures past the OEM Charge Air Coolers' limits resulting in dangerously high Intake Air Temperatures (IATs). Pure turbos approached CSF to develop a Charge Air Cooler upgrade that would hold up to the extreme boost levels their turbos upgrades could generate and keep the car's IATs in check. The result was the World's 1st Cast End Tank Designed High Performance Charge Air Cooler Set for the F1X M5 M6. CSF used CFD analysis and testing to create the largest charge air cooler that could fit in the factory location. The Top Bottom, Cross Flow, Dual Pass Cores are 28% larger than the factory coolers and offer significant reductions in IATs at increased boost levels. The CSF #8109 Cooling product is designed to be a "Drop In Fit" applications. The product will install in the OEM Location with no modifications necessary unless otherwise noted or instructions are included in the product package. Please see the manufacturer repair manual for standard installation instructions. If you do not feel confident installing this product CSF recommends taking it to a qualified installation facility.