Overview
MST Performance catted downpipe for the BMW M140i M240i M340i M440i M540i - X2/X3/X4 M40i 3.0. Toyota Supra 3.0 (FOR NON OPF). This is one of the highest-efficiency downpipes worldwide, engineered specifically for BMW/Toyota B58 3.0 engine vehicles. Large diameter design gives you the same efficiency as straight pipes.
Compatibility
Compatibility information not available.
Key Features
- Largest diameter downpipe for B58 worldwide
- 6" diameter Euro 6 200 cell catalytic converter
- No CEL guarantee
- Large diameter design gives you the same efficiency as straight pipes
- CNC adapter corresponding to largest diameter design turbos
- Dyno test results on stock vehicle, additional 18-25hp & 4kgm, also enhances performance for tuned vehicles
- Suitable for 1000hp or more vehicles
- Greatly reduces exhaust pressures & temperatures
Specifications
| Product Type | Exhaust System |
| Catalytic Converter | 200-cell catalytic converter (Euro 6) |
| Pipe Diameter | 6 inch |
| Adapter | CNC machined adapter |
| Configuration | For GPF/OPF vehicles |
Installation
Professional installation is recommended for this product.
Book an AppointmentInstallation and usage guidance is general reference only. Manufacturer instructions take precedence. Visitors uncertain about installation or use should seek professional advice.
FAQ
Is this catted downpipe designed for my vehicle?
This listing is for the BMW M140i M240i M340i M440i M540i - X2/X3/X4 M40i 3.0. Toyota Supra 3.0 (FOR NON OPF). MST fits this part to that application; MST also notes that model-year transition vehicles and different regional specifications can vary, so please confirm your engine bay before ordering.
Will this downpipe trigger a check engine light?
MST states a no-CEL guarantee for this downpipe, and its catalytic-converter warranty applies if a check engine light is triggered by the converter.
How do I know if I need the GPF/OPF version?
MST asks customers to confirm whether their vehicle is the GPF or non-GPF version before ordering, and recommends a photo of the engine bay for verification where the model year is transitional.
Does this downpipe need tuning?
MST states this downpipe is suitable for either stock or tuned vehicles.