BMW Axleback Exhaust for BMW Z Series E85/6 (2003-2008)

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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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Rogue Engineering Diablo Exhaust
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rogue Engineering - Corporate Logo
T#:25971886
Part#: MZ4-EX
Ships in 9 Business Days
$ 1,195.00 USD
$ 1,195.00 USD

Rogue Engineering Z4 M Diablo Exhaust

Rogue Engineering is proud to introduce their Z4 M Diablo exhaust. A cursory glance at the exhaust easily shows how this exhaust excels in both performance while saving weight. However, a closer look will show the pure artistry of its construction and elements of unique design.

Like the successful E46 M3 Diablo exhaust, the Z4 M Diablo exhaust is designed to compliment the high-revving engine concept which BMW has implemented into the M brand vehicles as of late. This means that the exhaust note will not only sound good at low RPMs, but also at the high RPM limit of the engine. Additionally, the Z4 M Diablo will improve performance at high RPMs with its straight-through muffler design.

Features:

  • Significant weight savings of 15 lbs. compared to the factory muffler
  • High-quality T-304 stainless steel construction for durability
  • Straight-through muffler design improves performance at high RPMs
  • Deep, throaty exhaust note complements the high-revving engine concept
  • Easy installation with factory-like hangers, no cutting or welding required

Installation of the Z4 M Diablo requires no cutting or welding as it requires the removal of the factory rear mufflers. Installation time is approximately 45 minutes. No new gaskets or hardware is required.

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Supersprint Performance Exhaust System - Z4 M Coupe/Roadster S54 3.2L...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:588432
Part#: Z4MSS
Ships on Sep 4, 2026
Starting at $ 3,156.98 USD
Starting at $ 3,156.98 USD
Supersprint has a wide variety of exhaust components available for the Z4 M Coupe and Roadster. You can pick and choose from either a 60mm Exhaust manifold, designed for increased exhaust flow and higher power potential, or a 63.5mm Racing Exhaust Manifold, built entirely for the best exhaust flow possible! To accompany the headers, you again have the choice of either a catted Section 1 exhaust pipes that feature high-flow metallic catalytic converters, keeping emissions down, or straight Section 1 pipes that eliminate the secondary catalytic converters, eliminating unnecessary exhaust restrictions. Available either as a part of a full system or by itself, the Supersprint Section 2 X-Pipe is the perfect replacement for the factory x-pipe that is resonated and adds another point of excessive restriction and muffling. The Supersprint X-pipe has a straight-through design that provides better flow characteristics and gives your BMW a slightly more aggressive exhaust note. The last set of exhaust components available are the Mufflers and the optional connecting kit. Available in two versions, Sport or Race, Supersprint mufflers are designed with power in mind, while still giving amazing exhaust tones! The Sport mufflers are slightly louder than stock and flow much better than the stock mufflers, and the Race mufflers are even louder and more free-flowing, giving your Z4 M an amazing exhaust sound that never gets old! If you want to run only the mufflers and not any of the other components, you must also purchase the connecting kit which allows you to pair the mufflers with your stock x-pipe. If you decide to go with the Supersprint X-pipe, the connecting kit is not needed. Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price, Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long-lasting construction, and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preference. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!
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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
$ 399.00 USD
Free Shipping on orders $49 and up
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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