BMW Axleback Exhaust for BMW 4 Series F33 (2014+)

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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 1 Business Day
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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BMW M Performance Valve-Controlled Muffler
BMW M Performance Valve-Controlled Muffler
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:545356
Part#: 18302407185
Ships in 5 Business Days
2% off MSRP $ 2,270.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,226.99 USD
Add to Wish List
2% off MSRP
$ 2,270.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,226.99 USD
Add to Wish List
The M Performance Valve-Controlled Muffler is an advanced exhaust upgrade designed to elevate the sound, performance, and appearance of BMW M models. It features an electronically controlled valve system, enabling drivers to adjust the exhaust tone for a more engaging driving experience. **Key Features:** - **Customizable Sound:** Adjustable valve system allows switching between refined or aggressive exhaust tones. - **Improved Performance:** Optimized exhaust flow for enhanced power and throttle responsiveness. - **Premium Build:** Made from high-quality stainless steel for longevity and resistance to corrosion. - **Perfect Fit:** Designed for seamless integration with BMW M models. - **Sporty Design:** Features M Performance branding and a bold exhaust tip design. **Application:** Perfect for BMW enthusiasts who want a dynamic, customizable exhaust sound while maintaining OEM quality and performance.
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