BMW Axleback Exhaust for BMW G99 M5 S68 4.4L

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Axleback exhaust systems generally include what's behind your rear axle. These are among the easiest of exhaust upgrades to install, and give you an instant upgrade in sound.
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BMW Xforce Smartbox Varex Muffler ECU Upgrade Module
BMW Xforce Smartbox Varex Muffler ECU Upgrade Module
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
XForce - Corporate Logo
T#:28570834
Part#: VKSB01-ECU-MODUL
Ships in 2 Business Days
Sale - Save 10% $ 399.00

This product was last offered at the strikethrough price on
06-30-2026

$ 359.10 USD
Free Shipping on orders $49 and up
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Sale - Save 10%
$ 399.00

This product was last offered at the strikethrough price on
06-30-2026

$ 359.10 USD
Free Shipping on orders $49 and up
Add to Wish List
BMW Xforce Smartbox Varex Muffler ECU Upgrade Module is the ideal choice for BMW owners seeking to enhance their vehicle's performance. This innovative module seamlessly integrates with the Varex muffler system, allowing for precise control over exhaust sound and performance. With its easy installation process and versatile functionality, it provides an elevated driving experience for BMW enthusiasts.
  • Seamless integration with Varex muffler system
  • Precise control over exhaust sound and performance
  • Easy installation process
  • Versatile functionality for enhanced driving experience
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Valve Rear Axle-Back Exhaust (Brushed Tips) - G90/G99 M5
Valve Rear Axle-Back Exhaust (Brushed Tips) - G90/G99 M5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
T#:51285652
Part#: 11-141
Ships in 3 Business Days
New Item
$ 4,274.00 USD
Free Shipping
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$ 4,274.00 USD
Free Shipping
Add to Wish List
For the owner of the new G90 M5, the Active Autowerke Signature Catback System offers the perfect balance of luxury refinement and aggressive performance. Constructed entirely from corrosion-resistant T304 stainless steel, this system is built to withstand extreme thermal loads while maintaining a lifetime of consistent finish. The engineering team focused heavily on "Sound Engineering," ensuring that while the exhaust is louder and deeper than stock, it remains completely free of interior cabin drone—a critical requirement for the high-end M5 experience. With its direct-fit installation and a variety of 112mm quad tip finishes, this exhaust provides a surgical fit and a premium upgrade that complements the caliber of the world’s most powerful M-sedan. Key Features: USA Fabricated: Hand-made in Miami, FL, using precision TIG welding and master fixtures for a guaranteed fit. Daily Driveability: Tuned for a clean, sophisticated idle and low-drone cruising, ideal for long highway trips. Advanced Material Science: T304 Stainless construction offers superior heat resistance and long-term durability. Inclusive Hardware Kit: Includes all clamps, gaskets, and valve motor brackets required for a seamless install. Enhanced Visuals: Quad 112mm dual-wall tips are designed to resist heat discoloration and fill out the bumper cutouts. Specifications: System Type: Valved Full Catback Exhaust Tubing: Mandrel-bent for zero-turbulence exhaust gas flow Valve Operation: Independent remote-controlled electronic valves Performance Gain: +20–25 lb-ft torque (Estimated) Vehicle Fitment: 2025+ BMW M5 (G90 Sedan and G99 Touring) Tip Options: Brushed Stainless Matte Black Carbon Fiber
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Active Autowerke Valve Rear Axle-Back Exhaust (Black Tips) - G90/G99 M5
Active Autowerke Valve Rear Axle-Back Exhaust (Black Tips) - G90/G99 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
T#:51285655
Part#: 11-141B
Ships in 3 Business Days
New Item
$ 4,369.00 USD
Free Shipping
Add to Wish List
$ 4,369.00 USD
Free Shipping
Add to Wish List
For the owner of the new G90 M5, the Active Autowerke Signature Catback System offers the perfect balance of luxury refinement and aggressive performance. Constructed entirely from corrosion-resistant T304 stainless steel, this system is built to withstand extreme thermal loads while maintaining a lifetime of consistent finish. The engineering team focused heavily on "Sound Engineering," ensuring that while the exhaust is louder and deeper than stock, it remains completely free of interior cabin drone—a critical requirement for the high-end M5 experience. With its direct-fit installation and a variety of 112mm quad tip finishes, this exhaust provides a surgical fit and a premium upgrade that complements the caliber of the world’s most powerful M-sedan. Key Features: USA Fabricated: Hand-made in Miami, FL, using precision TIG welding and master fixtures for a guaranteed fit. Daily Driveability: Tuned for a clean, sophisticated idle and low-drone cruising, ideal for long highway trips. Advanced Material Science: T304 Stainless construction offers superior heat resistance and long-term durability. Inclusive Hardware Kit: Includes all clamps, gaskets, and valve motor brackets required for a seamless install. Enhanced Visuals: Quad 112mm dual-wall tips are designed to resist heat discoloration and fill out the bumper cutouts. Specifications: System Type: Valved Full Catback Exhaust Tubing: Mandrel-bent for zero-turbulence exhaust gas flow Valve Operation: Independent remote-controlled electronic valves Performance Gain: +20–25 lb-ft torque (Estimated) Vehicle Fitment: 2025+ BMW M5 (G90 Sedan and G99 Touring) Tip Options: Brushed Stainless Matte Black Carbon Fiber
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Active Autowerke Valve Rear Axle-Back Exhaust (Carbon Tips) - G90/G99 M5
Active Autowerke Valve Rear Axle-Back Exhaust (Carbon Tips) - G90/G99...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
T#:51285656
Part#: 11-141C
Ships in 3 Business Days
New Item
$ 4,369.00 USD
Free Shipping
Add to Wish List
$ 4,369.00 USD
Free Shipping
Add to Wish List
For the owner of the new G90 M5, the Active Autowerke Signature Catback System offers the perfect balance of luxury refinement and aggressive performance. Constructed entirely from corrosion-resistant T304 stainless steel, this system is built to withstand extreme thermal loads while maintaining a lifetime of consistent finish. The engineering team focused heavily on "Sound Engineering," ensuring that while the exhaust is louder and deeper than stock, it remains completely free of interior cabin drone—a critical requirement for the high-end M5 experience. With its direct-fit installation and a variety of 112mm quad tip finishes, this exhaust provides a surgical fit and a premium upgrade that complements the caliber of the world’s most powerful M-sedan. Key Features: USA Fabricated: Hand-made in Miami, FL, using precision TIG welding and master fixtures for a guaranteed fit. Daily Driveability: Tuned for a clean, sophisticated idle and low-drone cruising, ideal for long highway trips. Advanced Material Science: T304 Stainless construction offers superior heat resistance and long-term durability. Inclusive Hardware Kit: Includes all clamps, gaskets, and valve motor brackets required for a seamless install. Enhanced Visuals: Quad 112mm dual-wall tips are designed to resist heat discoloration and fill out the bumper cutouts. Specifications: System Type: Valved Full Catback Exhaust Tubing: Mandrel-bent for zero-turbulence exhaust gas flow Valve Operation: Independent remote-controlled electronic valves Performance Gain: +20–25 lb-ft torque (Estimated) Vehicle Fitment: 2025+ BMW M5 (G90 Sedan and G99 Touring) Tip Options: Brushed Stainless Matte Black Carbon Fiber
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