MAD Exhaust BMW M5 G90 (2025-2026) Performance Axle Back Muffler MAD-138
Fitment Information
- BMW G90 M5 (2025, 2026)
Emissions Compliance
- This is an axleback exhaust and does not alter or replace any emissions equipment.
Specs & Features
- Larger-diameter pipingĀ for increased flow
- IncludesĀ two valve motorsĀ andĀ valve controller
- 304 stainless steelĀ construction
- Lifetime warranty
- Compatible with theĀ stock midpipeĀ or theĀ MAD 5-inch midpipe
- Note:Ā If connecting to the factory midpipe,Ā cutting is required
Product Description
TheĀ MAD axle-backĀ is the perfect finishing touch for your G90 M5 especially when paired with theĀ MAD 5-inch midpipeĀ for maximum sound. Choose from brushed, black, or carbon tips to match the look you want.
This system featuresĀ larger-diameter piping for increased flow, and itās fully valved withĀ two valve motors and a valve controller included. You have full control over your exhaust tone, allowing you to switch between a quiet, comfortable sound or a loud, aggressive tone whenever you want. The smaller muffler box reduces weight and improves airflow even further, delivering more sound, better throttle response, and a cleaner overall tone.
Deep, aggressive, and controlled this setup gives the G90 M5 the sound it shouldāve had from day one.
Product Information
Product Information
Shipping & Returns
Shipping & Returns






MAD Exhaust BMW M5 G90 (2025-2026) Performance Axle Back Muffler MAD-138
MAD Exhaust BMW M5 G90 (2025-2026) Performance Axle Back Muffler MAD-138
Fitment Information
- BMW G90 M5 (2025, 2026)
Emissions Compliance
- This is an axleback exhaust and does not alter or replace any emissions equipment.
Specs & Features
- Larger-diameter pipingĀ for increased flow
- IncludesĀ two valve motorsĀ andĀ valve controller
- 304 stainless steelĀ construction
- Lifetime warranty
- Compatible with theĀ stock midpipeĀ or theĀ MAD 5-inch midpipe
- Note:Ā If connecting to the factory midpipe,Ā cutting is required
Product Description
TheĀ MAD axle-backĀ is the perfect finishing touch for your G90 M5 especially when paired with theĀ MAD 5-inch midpipeĀ for maximum sound. Choose from brushed, black, or carbon tips to match the look you want.
This system featuresĀ larger-diameter piping for increased flow, and itās fully valved withĀ two valve motors and a valve controller included. You have full control over your exhaust tone, allowing you to switch between a quiet, comfortable sound or a loud, aggressive tone whenever you want. The smaller muffler box reduces weight and improves airflow even further, delivering more sound, better throttle response, and a cleaner overall tone.
Deep, aggressive, and controlled this setup gives the G90 M5 the sound it shouldāve had from day one.
Original: $1,349.00
-70%$1,349.00
$404.70Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Fitment Information
- BMW G90 M5 (2025, 2026)
Emissions Compliance
- This is an axleback exhaust and does not alter or replace any emissions equipment.
Specs & Features
- Larger-diameter pipingĀ for increased flow
- IncludesĀ two valve motorsĀ andĀ valve controller
- 304 stainless steelĀ construction
- Lifetime warranty
- Compatible with theĀ stock midpipeĀ or theĀ MAD 5-inch midpipe
- Note:Ā If connecting to the factory midpipe,Ā cutting is required
Product Description
TheĀ MAD axle-backĀ is the perfect finishing touch for your G90 M5 especially when paired with theĀ MAD 5-inch midpipeĀ for maximum sound. Choose from brushed, black, or carbon tips to match the look you want.
This system featuresĀ larger-diameter piping for increased flow, and itās fully valved withĀ two valve motors and a valve controller included. You have full control over your exhaust tone, allowing you to switch between a quiet, comfortable sound or a loud, aggressive tone whenever you want. The smaller muffler box reduces weight and improves airflow even further, delivering more sound, better throttle response, and a cleaner overall tone.
Deep, aggressive, and controlled this setup gives the G90 M5 the sound it shouldāve had from day one.






















