M5 F90

The RedStar Exhaust BMW F90 M5 Secondary Downpipes are engineered to improve exhaust flow and performance while maintaining factory drivability. Designed as a lower secondary slip-style downpipe, this upgrade replaces the restrictive factory secondary catalytic converters with a fully bolt-on solution. Developed with a flow-optimized design and precision...

REDSTAR EXHAUST primary downpipes for the BMW F90 M5 are engineered for optimal exhaust flow and precise fitment. These downpipes reduce backpressure to deliver increased power, quicker turbo response, and a more aggressive exhaust note. Designed as a direct bolt-on upgrade, they provide a simple yet effective way to unlock more performance without...

REDSTAR EXHAUST Complete Downpipes System for the BMW F90 M5 is engineered for maximum exhaust flow and a precise OEM-style fit. Utilizing the factory split slip-on design, this system includes both the upper primary and secondary downpipes for a seamless installation. By reducing exhaust restriction, it delivers significant power gains, faster turbo...