Description
Engineered for domination. MST?s revolutionary downpipe for the B58 engine is among the highest-efficiency options on the market, delivering massive flow volume, dramatic torque gains, and race-ready exhaust acoustics ? with full compatibility across BMW and Toyota Supra platforms.
Features:
- World?s Largest Diameter: 6"" Euro 6 400-cell catalytic converter
- No CEL Guarantee: Designed to prevent check engine lights even with high-flow configuration
- Dyno-Tested Performance: +18?25HP and +4kgm torque on stock engines
- Supports Builds Up to 800+ HP: Ideal for extreme tuning while enhancing reliability
- Efficient Flow Design: Matches straight-pipe performance with cleaner emissions
- CNC Adapter: Engineered for perfect fit with large diameter turbo setups
- Works on OPF/GPF & Non-OPF Vehicles: Select version at checkout
- Reduces Exhaust Pressure & Temperatures: Improves combustion and longevity
Important Note:s
- This product is FOR OFF-ROAD / RACE USE ONLY
- Not USA 50-state legal and may not comply with emissions laws in certain countries
- Catalytic Converter EPA Establishment Number: 101709-CHN-1
Warranty Information
- 2-Year CAT Warranty: Covers CELs caused by MST catalytic converter only
- Free downpipe exchange provided if CAT-triggered CEL occurs (shipping costs not included)
- Exchange facilitated through the original dealer after return confirmation
- Customer is responsible for all domestic shipping charges
Vehicle Compatibility:
- BMW F20 M140i
- BMW F22 M240i / M240i xDrive
- BMW F30 / F31 / G20 340i / 340i xDrive
- BMW F32 / F33 / F36 / G22 / G23 / G26 440i / 440i xDrive
- BMW G30 / G31 540i / 540i xDrive
- BMW G11 / G12 740i / 740i xDrive
- BMW G42 M240i (2022+)
- Toyota A90 / A91 Supra (2019+)
Year Range: 2016 onwards
Note: Please confirm product compatibility (GPF and non-GPF version) with your vehicle before ordering. For questions or fitment support, contact us.
Warranty
Our warranty terms are based on each manufacturer’s guidelines. Depending on the specific manufacturer, customers may be eligible to process warranty claims either directly with the manufacturer or through us. For detailed information or assistance with warranty inquiries, please contact our support team.
Shipping & Returns
Shipping time will be provided once your order has been processed. Please note that shipping options cannot be changed after your order has been placed.
For returns, kindly contact our support team for guidance. We'll walk you through the process and ensure everything goes smoothly.
Frequently Asked Questions
OEM (Original Equipment Manufacturer) parts are made by the vehicle’s original manufacturer and guarantee perfect fit and performance. Aftermarket parts are produced by third-party companies and may offer enhanced performance or cost savings, but compatibility should always be verified before purchase.
Yes, we work with a network of certified and approved workshops to ensure professional installation of your performance parts. Get in touch with us to find a recommended installer near you.
Yes, but it’s important to ensure they work together without causing performance issues. Some aftermarket parts are designed to complement OEM components, while others may require full system upgrades.
Yes, once your order is shipped, a tracking number will be emailed to you.
Orders can only be modified or canceled before they are processed. Please reach out to us as soon as possible.
If you're not completely satisfied with your purchase, you may return it within 7 days of receiving your order for a full refund, excluding delivery costs. Please note that this policy does not apply to special order parts. To qualify for a refund, items must be unused and returned in their original packaging.