BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW F98 X4 M S58 3.0L

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.

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CTS Turbo Performance Downpipes - High Flow Cats - F97 X3 M, F98 X4 M
CTS Turbo Performance Downpipes - High Flow Cats - F97 X3 M, F98 X4 M...
CTS - Corporate Logo
T#:4333554
Part#: EXHDP0043CAT
Ships in 7 Business Days
$ 749.99 USD
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$ 749.99 USD
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CTS Turbo High Flow-CATS are made to maximize exhaust flow for the highest power gains. Designed using the latest in CAD technology; this part is made to fit perfectly in place of the restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. In addition to unleashing the power and performance of your 3.0 Twin Turbo, CTS' High Flow-CATS will make your vehicle sound like it really should. When installed with factory exhaust, it produces a louder and deeper growl with a much more pronounced exhaust “crackle” on downshift. While up-shifting you will enjoy a confident “punch!” as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system. Product Details: Designed and tested on a real car in the real world Cast T304 stainless steel, TIG welded back-purged construction 200 Cell High Flow-CATS Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Fitment: 2019-2022 G01 BMW X3M 2019-2022 G01 BMW X3M Competition 2019-2022 G02 BMW X4M 2019-2022 G02 BMW X4M Competition To remove the CEL that will occur, proper stage 2 tuning software must be used.
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Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes w GESI CAT
Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes w GESI CAT ...
Active Autowerke - Corporate Logo
T#:638761
Part#: 11-070
Ships in 3 Business Days
$ 2,849.99 USD
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$ 2,849.99 USD
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For over 30 years, Active Autowerke has been the one to turn to for high quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about.
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VRSF Catted Downpipes
VRSF Catted Downpipes
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:13036534
Part#: VRSFCD1922
Ships in 1 Business Day
$ 599.00 USD
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$ 599.00 USD
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These catted downpipes from VRSF are the best bang for the buck mod available for your S58. With these u[graded downpipes, backpressures is significantly reduced, letting the turbo spool faster and increase power. As direct bolt ons, these downpipes can give up to 30whp and 35wtq increase.
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CTS Turbo Resonator Delete Kit - BMW S58 F97/F98 X3M/X4M
CTS Turbo Resonator Delete Kit - BMW S58 F97/F98 X3M/X4M
CTS - Corporate Logo
T#:51075069
Part#: EXH-TP-0026
Ships in 7 Business Days
New Item
$ 299.99 USD
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$ 299.99 USD
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This refined resonator delete kit for the F97 X3M and F98 X4M transforms the factory exhaust into a more aggressive, powerful note that perfectly suits the S58 engine. By replacing the restrictive, hydro-formed stock section with 70mm T304 stainless steel tubing, this upgrade significantly improves exhaust flow and provides a fuller, more assertive sound profile.
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Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes W Aflow CATs
Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes W Aflow CATs ...
Active Autowerke - Corporate Logo
T#:50837018
Part#: 11-070A
Ships in 3 Business Days
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$ 2,399.00 USD
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$ 2,399.00 USD
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These downpipes provide faster turbo spool, increased power, and a high-performance exhaust sound.
Active Autowerke Valved Rear Axle-back Exhaust (Brushed Tips) - F97/F98 X3M/X4M
Active Autowerke Valved Rear Axle-back Exhaust (Brushed Tips) - F97/F...
Active Autowerke - Corporate Logo
T#:31522900
Part#: 11-103
Ships in 3 Business Days
$ 2,374.99 USD
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$ 2,374.99 USD
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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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Active Autowerke Valved Rear Axle-back Exhaust (Black Tips) - F97/F98 X3M/X4M
Active Autowerke Valved Rear Axle-back Exhaust (Black Tips) - F97/F98...
Active Autowerke - Corporate Logo
T#:51039980
Part#: 11-103B
Ships in 3 Business Days
New Item
$ 3,799.00 USD
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$ 3,799.00 USD
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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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Valved Rear Axle-back Exhaust (Carbon Tips) - F97/F98 X3M/X4M
Valved Rear Axle-back Exhaust (Carbon Tips) - F97/F98 X3M/X4M ...
Active Autowerke - Corporate Logo
T#:51039997
Part#: 11-103C
Ships in 3 Business Days
New Item
$ 2,944.00 USD
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$ 2,944.00 USD
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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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