BMW F9X M5 / M8 Downpipes

Take your BMW M5 or M8 to the next level with RK Autowerks Catless Race Downpipes, engineered for maximum performance and a perfect OEM-like fit. Designed using advanced 3D scanning and prototyping, these downpipes eliminate the restrictive factory catalytic converters, drastically improving exhaust flow for faster turbo spool, increased horsepower, and higher torque—all instantly noticeable behind the wheel.

Each set is crafted from mandrel-bent T304 stainless steel and features CNC velocity stack flanges at the turbo mount, ensuring optimal flow and secure fitment. Precision TIG-welded joints and heavy-duty stainless v-band flanges deliver lasting durability and performance even under the harshest conditions. O2 sensor bungs are precisely located to match factory positions. Note: These are not offered with heat shielding or ceramic coating.

Key Features:

• Mandrel-bent T304 stainless steel construction
• Precision TIG welded for long-term durability
• Heavy-duty v-band flanges for secure, leak-free seal
• Factory O2 sensor locations retained with stainless bungs
• Significantly reduced backpressure and turbo lag
• Fits like OEM, no cutting or modification required

Applications:

• 2018+ BMW M5 (F90)
• 2020+ BMW M8 Coupe, Convertible & Gran Coupe (F91, F92, F93)

⚠️ OFF-ROAD USE ONLY
Catless downpipes are not legal for street use and will trigger a check engine light. These are intended for off-road, racing, or track-only vehicles. Federal and state laws prohibit removal or modification of emissions systems on public road vehicles.