MAD Exhaust MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe
MAD Exhaust MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe
MAD Exhaust MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe
MAD Exhaust MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe
MAD

MAD BMW B58 2025+ Gen 3 M340 M440 5" 200 Cell Catted Downpipe

$369.00
Quality Content
Quality Content
Description Fitment Reviews

Enhance your 2025+ BMW M340 & M440 with the MAD BMW B58 Gen 3 5" 200 Cell Catted Downpipe—engineered specifically for performance enthusiasts seeking a cleaner and refined upgrade. Built with premium-quality 304 stainless steel and equipped with a high-flow catalytic converter, this downpipe delivers impressive power gains, increased airflow, and quicker turbo response without the typical fuel smell of a catless design.

Enjoy a deeper, richer, and more aggressive exhaust note compared to your stock setup, but with a refined tone that's smoother and cleaner than catless options. The MAD catted downpipe strikes the ideal balance between noticeable performance gains and everyday drivability, ensuring reliability and comfort for street and track use alike.

Precision welds, exceptional craftsmanship, and direct bolt-on installation make this downpipe an essential upgrade for your BMW, providing maximum benefits without compromising convenience.

Features:

  • High-quality 304 stainless steel construction for durability

  • 5-inch diameter offers significant airflow improvement over stock

  • High-flow catalytic converter eliminates fuel smell common with catless downpipes

  • Deeper, aggressive, yet refined exhaust note

  • Noticeable horsepower and torque increases

  • Perfect bolt-on fitment for hassle-free installation

  • Ideal for enthusiasts who want power and sound without compromise
Quality Content

We try to keep all the products that are listed our site in stock, with short lead times, but with so many product offerings, it's not always possible to do so.

Products are kept in stock with our vendors, distributors, or partnered warehouses.

Please note: some products are custom made. For these products, check product description for lead times.

To check item stock or lead time please contact our support staff.

Orders are processed within 1-5 business days after order placement. Business days are Monday-Friday.

Most orders are delivered within 7-10 business days of order shipment.

Please note: some products are made to order or have longer lead / shipping times. Review product description for this information.

If product is out of stock or has longer lead time we will notify you.

To review fitment, check the fitment tab on the product description.

If you're still unsure, please contact our support staff.