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.
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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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 preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! NOTE: Supersprint engineers and manufactures complete exhaust systems. This part was designed to be used with the rest of the Supersprint system on this car but may be used on its own. Contact us for more details.
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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 preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! NOTE: Supersprint engineers and manufactures complete exhaust systems. This part was designed to be used with the rest of the Supersprint system on this car but may be used on its own. Contact us for more details.
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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
At Active Autowerke, performance is about more than peak numbers. It’s about delivering a driving experience that feels sharper, sounds better, and maintains the refinement expected from a modern BMW. With over four decades of BMW performance development behind it, the F97/F98 X3M/X4M rear exhaust was engineered to give the S58-powered platform the deeper, more assertive tone many owners feel the factory system lacks. This axle-back system increases exhaust presence while preserving proper flow and daily drivability. By retaining the factory valve actuators, the system maintains full OEM functionality — delivering an aggressive note with the valves open and a controlled, composed tone when closed. On its own, the rear section provides a noticeable but refined sound improvement. For owners looking to maximize both sound and performance, the system pairs effectively with Active Autowerke mid-pipes and catted downpipes. Construction focuses on durability and consistent fit. The exhaust is manufactured from high-quality 304 stainless steel and each unit is test-fit on Active Autowerke’s dedicated F97/F98 fixture to ensure proper alignment and installation. Important Fitment Information A version is available for vehicles retaining the factory mid-pipes. If you later upgrade to an Active Autowerke or other aftermarket mid-pipe, different connecting pipes may be required. Sound Note: The rear section alone offers a refined increase in volume. The most significant sound change occurs when paired with an upgraded mid-pipe. Product Highlights Designed and manufactured in the USA Constructed from durable 304 stainless steel Deeper, more aggressive tone while retaining factory valve control Reuses OEM BMW exhaust valve actuators Each system test-fit on F97/F98 exhaust fixture Guaranteed fitment for F97/F98 BMW X3M and X4M Includes all necessary installation hardware
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At Active Autowerke, performance is about more than peak numbers. It’s about delivering a driving experience that feels sharper, sounds better, and maintains the refinement expected from a modern BMW. With over four decades of BMW performance development behind it, the F97/F98 X3M/X4M rear exhaust was engineered to give the S58-powered platform the deeper, more assertive tone many owners feel the factory system lacks. This axle-back system increases exhaust presence while preserving proper flow and daily drivability. By retaining the factory valve actuators, the system maintains full OEM functionality — delivering an aggressive note with the valves open and a controlled, composed tone when closed. On its own, the rear section provides a noticeable but refined sound improvement. For owners looking to maximize both sound and performance, the system pairs effectively with Active Autowerke mid-pipes and catted downpipes. Construction focuses on durability and consistent fit. The exhaust is manufactured from high-quality 304 stainless steel and each unit is test-fit on Active Autowerke’s dedicated F97/F98 fixture to ensure proper alignment and installation. Important Fitment Information A version is available for vehicles retaining the factory mid-pipes. If you later upgrade to an Active Autowerke or other aftermarket mid-pipe, different connecting pipes may be required. Sound Note: The rear section alone offers a refined increase in volume. The most significant sound change occurs when paired with an upgraded mid-pipe. Product Highlights Designed and manufactured in the USA Constructed from durable 304 stainless steel Deeper, more aggressive tone while retaining factory valve control Reuses OEM BMW exhaust valve actuators Each system test-fit on F97/F98 exhaust fixture Guaranteed fitment for F97/F98 BMW X3M and X4M Includes all necessary installation hardware
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At Active Autowerke, performance is about more than peak numbers. It’s about delivering a driving experience that feels sharper, sounds better, and maintains the refinement expected from a modern BMW. With over four decades of BMW performance development behind it, the F97/F98 X3M/X4M rear exhaust was engineered to give the S58-powered platform the deeper, more assertive tone many owners feel the factory system lacks. This axle-back system increases exhaust presence while preserving proper flow and daily drivability. By retaining the factory valve actuators, the system maintains full OEM functionality — delivering an aggressive note with the valves open and a controlled, composed tone when closed. On its own, the rear section provides a noticeable but refined sound improvement. For owners looking to maximize both sound and performance, the system pairs effectively with Active Autowerke mid-pipes and catted downpipes. Construction focuses on durability and consistent fit. The exhaust is manufactured from high-quality 304 stainless steel and each unit is test-fit on Active Autowerke’s dedicated F97/F98 fixture to ensure proper alignment and installation. Important Fitment Information A version is available for vehicles retaining the factory mid-pipes. If you later upgrade to an Active Autowerke or other aftermarket mid-pipe, different connecting pipes may be required. Sound Note: The rear section alone offers a refined increase in volume. The most significant sound change occurs when paired with an upgraded mid-pipe. Product Highlights Designed and manufactured in the USA Constructed from durable 304 stainless steel Deeper, more aggressive tone while retaining factory valve control Reuses OEM BMW exhaust valve actuators Each system test-fit on F97/F98 exhaust fixture Guaranteed fitment for F97/F98 BMW X3M and X4M Includes all necessary installation hardware
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