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Reference: RS.F90M5.Secondary
Brand: RedStar Exhaust
Redstar Exhaust M5 F90 Secondary Cat Delete. We designed flow-optimized and perfectly fit BMW F90 downpipes, Lower Secondary Slip Style Downpipe only. Completely bolt-on, No check engine light issues.
Reference: RS.F90M5.Primary
Brand: RedStar Exhaust
We designed flow-optimized and perfectly fit BMW F90 downpipes, upper primary slip-on style downpipe only.
Reference: RS.F90M5.DP
Brand: RedStar Exhaust
We designed flow-optimized and perfectly fit BMW F90 downpipes, that utilize OEM split slip-on design. Includes Upper Primary and Secondary Downpipes. F90 M5 CS Competition Downpipes Video F90 M5 Competition Downpipes Before & After video F90 M5 Competition Heat Shielded Downpipes Video