MAD F9X S63R 200 CEL Catted Primary Downpipes – BMW M5 / M8 (F90/F92)

In Stock: Ships in 1-2 business days
Available to Order: Ships in 3-4 Weeks

Looking to unlock more power and sound from your S63R without going fully catless?

The factory primary downpipes restrict exhaust flow and limit the performance potential of your twin-turbo V8.

The MAD 200 CEL Catted Primary Downpipes replace the restrictive factory downpipes with high-flow catalytic converters, engineered to improve exhaust flow, increase power, and deliver a more aggressive exhaust note.

More airflow. More power. Refined aggression.

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Why These Downpipes

MAD designed these downpipes to improve exhaust flow while retaining high-flow catalytic converters, offering an alternative to a completely catless setup.

Featuring 200 CEL high-flow catalytic converters and smooth mandrel-bent piping, these downpipes reduce exhaust restrictions and allow the turbos to operate more efficiently.

MAD advertises gains of up to 30 HP on stock turbos, with additional potential on upgraded turbo setups. Actual gains depend on your vehicle's configuration and tuning.

The integrated flex section helps reduce stress and unwanted vibration, while the optimized piping delivers a more aggressive exhaust note without introducing unwanted drone.

Increased airflow. Improved turbo response. Built for real performance gains. 

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Installation Overview

• Direct bolt-on replacement for factory primary downpipes

• Compatible with the factory exhaust system

• No cutting or welding required

• Includes necessary installation hardware and gaskets

• Professional installation recommended

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Fitment

BMW S63R Platform:

• 2018+ BMW F90 M5

• 2019+ BMW F92 M8

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Construction

• 200 CEL High-Flow Catalytic Converters

• Premium T304 Stainless Steel Construction

• Smooth Mandrel Bends for Maximum Exhaust Flow

• Optimized Piping to Minimize Turbulence

• Integrated Flex Section for Reduced Stress and Vibration

• Precision-Engineered Factory Flange Connections

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What's Included

• MAD 200 CEL Catted Primary Downpipes

• Required Installation Hardware

• Gaskets

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Warranty & Returns

• Eligible for a 90-day return window if unused, uninstalled, and in original condition, subject to Automaz Collective's return policy

• Backed by MAD's lifetime warranty on defects and fitment

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Important Notes

• Intended for off-road / motorsport use only

• Not legal for use on pollution-controlled vehicles operated on public roads

• High-flow catalytic converters do not guarantee emissions compliance

• A check engine light may occur depending on your vehicle's configuration

• Verify local emissions regulations before purchasing

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Automaz Approved

Looking for increased performance and a more aggressive exhaust note without going fully catless?

The MAD 200 CEL Catted Primary Downpipes offer a high-flow alternative for the F90 M5 and F92 M8, combining improved exhaust flow with premium stainless steel construction and direct bolt-on fitment.

An excellent option for enthusiasts looking to extract more performance from their S63R while retaining high-flow catalytic converters.

More power. More sound. High-flow performance.

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Emissions Disclaimer

This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.

By purchasing this product, you acknowledge and agree that:

• You are responsible for compliance with all applicable emissions laws and regulations.

• MAD, Automaz Collective, and their affiliates disclaim liability for improper or unlawful use of this product, to the extent permitted by law.

• Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.