For over 30 years, Active Autowerke has set the standard for BMW performance. The new F90 M5 GESI High-Flow Downpipes embody that legacy—engineered to unlock power, reduce heat, and deliver the raw performance your M5 deserves.
Crafted in-house in Miami, Florida from premium 304 stainless steel, each downpipe is TIG-welded for strength and precision fitment. A factory-matched 3.5” V-band inlet flows through a high-efficiency, mandrel-bent body for maximum exhaust velocity and quicker turbo spool. The design even retains the OEM O2 sensor heat shield for a clean, stock-like engine bay.
Featuring 4.5” GESI Ultra High Output (UHO) catalytic converters, these downpipes offer massive flow gains while staying 49-state EPA compliant and OBD2 safe—all without triggering a CEL. Expect sharper throttle response, a deeper tone, and consistent performance from street to track.
Key Features
- No CEL – guaranteed
- GESI high-flow cats (EPA & OBD2 compliant, 49 states)
- 4.5” mandrel-bent piping for maximum power
- Faster turbo spool & improved throttle response
- 304 stainless steel with TIG-welded construction
- Direct bolt-on fit – no cutting or welding
- Retains OEM O2 sensor heat shield for a stealth look
- Rated for 500–850 HP applications
- Withstands up to 1500°F
- Made in Miami, Florida
- 5-Year / 50,000-Mile Warranty on housing, 25,000-Mile Warranty on catalytic core
Vehicle Fitment
BMW X5M (F95) and X6M (F96) — 2020 and newer