MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe - MAD-128
- $369.00 USD
- $369.00 USD
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$369.00
Unlock the true performance potential of your BMW with the MAD BMW B58 2025+ Gen 3 M340 5" 200 Cell Catted Downpipe (Part Number: MAD-128). Designed for enthusiasts who demand power, refinement, and street drivability, this premium downpipe is constructed from high-grade 304 stainless steel and features a 5-inch diameter for significantly improved exhaust flow.
Engineered with a high-flow catalytic converter, this system reduces the fuel odor associated with catless setups while maintaining a powerful, deep exhaust note. The result is an aggressive yet clean tone that enhances your driving experience without compromising emissions compliance.
Perfect for both street and occasional track use, this catted downpipe delivers noticeable gains in horsepower and torque, improved turbo spool, and a more responsive throttle—while remaining easy to install thanks to its direct bolt-on design.
Fitment:
- Fits 2025+ BMW M340i models equipped with the Gen 3 B58 engine.
- Models include: BMW G20 M340i and G21 M340i Touring, production years 2025 and newer.
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BMW X3 G45 M50 2025+
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BMW X4 G46 M50 2025+
Key Features:
- Made from premium 304 stainless steel for long-lasting durability
- Large 5-inch diameter increases airflow over stock for more power
- Integrated high-flow catalytic converter for improved emissions and reduced fuel odor
- Produces a deeper, sportier exhaust note without harshness
- Direct bolt-on fitment — no cutting or welding required
- Optimized for both street performance and track reliability
- Engineered and built by MAD for the Gen 3 BMW B58 engine
Disclaimer:
For race use only. This product is not certified for use on public roads and may not comply with local emissions regulations. Additionally, it does not prevent the illumination of the Check Engine Light (CEL). Please consult your local laws and regulations before installation.
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