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...

We designed flow-optimized and perfectly fit BMW F90 downpipes, upper primary slip-on style downpipe only.

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...