Description
Upgrade your BMW M3 or M4's exhaust sound and performance with the MAD S55 Single Midpipe, designed specifically for BMW F8X models equipped with the S55 twin-turbocharged engine. Engineered to replace the restrictive factory midpipe configuration, this performance exhaust upgrade helps reduce backpressure, improve exhaust flow, and deliver a deeper, more aggressive exhaust note.
Featuring smooth bends and an optimized exhaust path, the MAD Single Midpipe promotes efficient exhaust flow while maintaining a comfortable driving experience without unwanted cabin drone. Whether running the factory turbochargers or an upgraded turbo setup, this midpipe is designed to support a wide range of performance configurations.
On stock turbo applications, the MAD S55 Single Midpipe can deliver performance gains of up to 18 WHP and 30 WTQ, depending on vehicle configuration, existing modifications, and engine tuning. Additional performance potential may be achieved when paired with upgraded turbochargers.
Designed for precise fitment, this direct-fit midpipe is compatible with the BMW F80 M3, F82 M4, and F83 M4 Convertible. An exhaust brace is included to provide the necessary support and simplify installation.
The MAD S55 Single Midpipe is backed by a lifetime warranty against manufacturing defects and fitment issues. In-stock orders typically ship within 1–2 business days.
Features and Benefits
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Improved Exhaust Flow: Replaces the restrictive factory midpipe configuration to help reduce exhaust backpressure.
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Increased Performance: Supports potential gains of up to 18 WHP and 30 WTQ on stock turbo applications.
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Turbo Upgrade Compatibility: Designed to support additional performance potential when paired with upgraded turbochargers.
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Optimized Exhaust Design: Smooth bends and transitions promote efficient exhaust flow.
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Aggressive Exhaust Sound: Produces a deeper, more aggressive exhaust tone.
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Drone-Free Design: Engineered to minimize unwanted cabin drone during normal driving.
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Precision Fitment: Direct-fit design developed for BMW F8X M3 and M4 applications.
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Exhaust Brace Included: Includes the required exhaust brace for additional support and proper installation.
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Lifetime Warranty: Covered against manufacturing defects and fitment issues.
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Fast Shipping: In-stock orders typically ship within 1–2 business days.
Important Installation Information
Downpipe gaskets are NOT included. Two downpipe gaskets are required for installation.
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BMW Part Number: 18307851168
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Required Quantity: 2
Vehicle Fitment
2015–2019 BMW F80 M3
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2015 BMW F80 M3
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2016 BMW F80 M3
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2017 BMW F80 M3
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2018 BMW F80 M3
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2019 BMW F80 M3
2015–2019 BMW F82 M4
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2015 BMW F82 M4
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2016 BMW F82 M4
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2017 BMW F82 M4
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2018 BMW F82 M4
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2019 BMW F82 M4
2015–2019 BMW F83 M4 Convertible
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2015 BMW F83 M4 Convertible
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2016 BMW F83 M4 Convertible
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2017 BMW F83 M4 Convertible
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2018 BMW F83 M4 Convertible
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2019 BMW F83 M4 Convertible
