Description
Looking to transform the sound of your BMW S68-powered platform without worrying about a check engine light? The MAD Catless Secondary Downpipes are the perfect solution.
Originally developed on the X5M and X6M, these are designed for enthusiasts who want a more aggressive sound across the latest generation of BMW V8 models—without the downsides of primary downpipes.
Why Choose Secondary Downpipes?
Unlike primary downpipes, the secondaries are installed further downstream in the exhaust system. This allows you to achieve a louder, more aggressive exhaust note without interfering with the primary catalytic converters, which are responsible for triggering check engine lights.
Sound and Performance Benefits
These downpipes are a customer favorite because they significantly enhance the exhaust note, adding a deeper, more aggressive tone that really brings the S68 to life.
While power gains aren’t as large as with primary downpipes, you’ll still notice improved throttle response and a slight bump in performance. For many owners, this is the perfect balance between sound, performance, and reliability.
Premium MAD Quality
Built from high-grade 304 stainless steel with precision TIG welding, the MAD secondary downpipes are designed to handle extreme heat and provide long-term durability.
The direct bolt-on design makes installation straightforward, with no cutting or permanent modifications required.
Why Choose MAD?
Unlike generic options, MAD secondary downpipes are designed specifically for the S68 platform, with fitment tested across multiple models including the X5M, X6M, and newer S68 vehicles like the G90/G99 M5.
Backed by our limited lifetime warranty, this is a simple upgrade that delivers big results.
Key Highlights
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Aggressive sound upgrade with no check engine light
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Noticeable throttle response improvement
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304 stainless steel construction for durability
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TIG welded and optimized for maximum flow
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Direct bolt-on fitment (no cutting required)
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Limited lifetime warranty
Fitment
Compatible with the following BMW models:
X Series
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X5 G05 LCI (2022–2025) – S68
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X5 M F95 LCI (2022–2025) – S68 (2024+ USA)
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X6 G06 LCI (2022–2025) – S68
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X6 M F96 LCI (2022–2025) – S68 (2024+ USA)
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X7 G07 LCI (2022–2025) – S68
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XM G09 (2021–2025) – S68
Notes
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Check your vehicle for correct flange style downpipes or email us your VIN
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LCI models only (where applicable)
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Does NOT fit pre-LCI models
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Compatible with both XDrive and non-XDrive (where applicable)
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Also fits European (EU) models
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:
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You are responsible for compliance with all applicable emissions laws and regulations
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MAD and its affiliates disclaim any liability for improper or unlawful use of this product
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Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws
Please check your local laws before purchase and installation.
