AFP 5” Catless Downpipe for A90 Supra / M240i / M340i / M440i – Gen 2 B58 **ETA September 30th for stock!**
Open up your Gen 2 B58 with the AFP 5” Catless Downpipe, designed for compatible Toyota GR Supra A90, BMW M240i, M340i, and M440i applications.
The large 5-inch catless design replaces the restrictive factory catalytic downpipe, creating a freer-flowing exhaust path while bringing out significantly more turbo and exhaust sound. It’s built for Gen 2 B58 owners looking for a straightforward supporting modification for tuned and higher-output setups.
5” High-Flow Catless Design
The factory catalytic converter creates a major restriction directly after the turbo. The AFP downpipe replaces that section with a large-diameter, unrestricted design.
5-inch downpipe design
Catless construction
Increased exhaust flow compared with the factory catalytic downpipe
More aggressive exhaust note
Increased turbo sound
Designed for tuned and performance-oriented Gen 2 B58 builds
Direct replacement design
Whether you’re running a basic ECU tune or building toward a more serious B58 setup, the AFP 5” downpipe gives the exhaust side considerably more room to flow.
Built for Gen 2 B58 Applications
Designed for compatible Gen 2 B58 vehicles, including:
Toyota GR Supra A90
BMW G42 M240i
BMW G20 M340i
BMW G22 M440i
Fitment can vary by model year and vehicle configuration. Verify compatibility before ordering.
Performance-Focused Construction
Built for the heat and demands of a modified turbocharged B58, the AFP 5” Catless Downpipe provides an unrestricted path out of the turbo while maintaining vehicle-specific fitment.
The result is a much more pronounced B58 exhaust note and turbo sound while eliminating the restriction of the factory catalytic downpipe.
Professional installation and appropriate ECU calibration are recommended.
Important Notice
This product removes the factory catalytic converter and may trigger a check-engine light. Catless downpipes may not comply with emissions or public-road requirements in your area. The purchaser is responsible for confirming applicable laws and regulations before installation or use.
Shipping & Warranty
Free shipping
Delivery time: 7–14 days after order processing
Secure packaging
Backed by the applicable AFP product warranty
Off-Road / Track Use Disclaimer
This product is intended for off-road and closed-course competition/track use only. It is not intended for use on public roads or on vehicles subject to emissions regulations. Installation removes the factory catalytic converter and may trigger a check-engine light. The purchaser is responsible for determining and complying with all applicable federal, state, and local laws before installation or use.
