CSF BMW F8X M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Sold Individually - Fits Left and Right Exhaust- Mufflers & Tips>Resonators Dual full 3" Cat Back

Dual full 3" Cat Back configuration tailored for the 3

Aeromotive in-line filters boast the most surface area possible for the highest flowing filters

Does Not Fit Single Bulb Type

Has 6 change-on-the-fly power levels and is Stacked for Power

Borla(r) Cat-Back(tm) & Axle-Back exhaust systems feature patented straight-through and multi-core technology is designed to unleash hidden horsepower

CSF BMW F8X M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Sold Individually - Fits Left and Right Exhaust- Mufflers & Tips>Resonators Dual full 3" Cat BackCompared to the OEM F8X coolers, the CSF units are a significant upgrade. CSF eliminated the OE plastic mounting pod by incorporating it into the modular design that fits both sides. This design improvement increases the size of both the core and tanks. The extra space taken from the mounting pod allowed for a 7% increase in Core Size and an 10% increase in Tank Volume. With a larger 2 row 42mm core, cooling efficiency and capacity are drastically