BMW G8X S58 Catless Race Downpipes by RK Autowerks

Maximize performance with the RK Autowerks Catless Race Downpipes for S58-powered BMW G80 M3, G82 / G83 M4, and G87 M2. These downpipes remove the restrictive factory catalytic converters to improve exhaust flow, lower back pressure, and provide faster turbo spool and sharper throttle response.

Designed with precision 3D scanning and prototyping, they deliver OEM-like fitment across all supported platforms. Drivers will immediately notice gains in horsepower, torque, and engine response under load.

Constructed from mandrel-bent T304 stainless steel and finished with CNC-machined velocity stack flanges at the turbo outlet, these downpipes are built for long-term durability and high-performance applications. All units feature TIG-welded joints, heavy-duty v-band flanges, and properly positioned stainless O2 bungs for seamless sensor integration.

Features:

• T304 stainless steel construction
• Mandrel-bent for optimized flow
• Precision TIG-welded joints
• CNC-machined velocity stack flanges
• OEM-positioned stainless steel O2 bungs
• Heavy-duty stainless V-band connections
• Reduced under-hood temperatures
• Direct bolt-on with factory-like fitment

Vehicle Fitment:

• 2020+ BMW M3 (G80)
• 2020+ BMW M4 Coupe/Convertible (G82 / G83)
• 2023+ BMW M2 (G87)

IMPORTANT NOTICE:
Catless downpipes are intended for off-road use only. Installing these parts will trigger a check engine light. Federal and many state laws prohibit removal or modification of emission-related components on public roads. Buyers are responsible for compliance with local regulations.