BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW F97 X3 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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ACTIVE VALVE CONTROL
ACTIVE VALVE CONTROL
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Milltek Sport - Corporate Logo
T#:35390991
Part#: SSXBM1234
In Stock
Sale - Save 10% $ 455.99

This product was last offered at the strikethrough price on
10-26-2026

$ 410.24 USD
Free Shipping on orders $49 and up
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Sale - Save 10%
$ 455.99

This product was last offered at the strikethrough price on
10-26-2026

$ 410.24 USD
Free Shipping on orders $49 and up
Add to Wish List
Milltek Sport's Active Valve Control (AVC) provides advanced exhaust management for vehicles equipped with factory valves as well as Milltek's performance exhaust systems with valve control upgrades. With seamless integration, AVC offers drivers the ability to control the opening and closing of exhaust valves, allowing precise tuning of sound and volume to match their preferences. For selected models, AVC includes optional app control via iPhone or Android devices, putting exhaust customization at the driver’s fingertips. Utilizing full CAN BUS integration with built-in safety protocols, the system ensures reliable operation while delivering complete control over the exhaust's acoustic performance.
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Milltek Performance Axle Back Exhaust System - BMW F97 X3M S58
Milltek Performance Axle Back Exhaust System - BMW F97 X3M S58 ...
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Milltek Sport - Corporate Logo
T#:26538357
Part#: SSXBM121
Ships on Nov 18, 2026
Sale - Save 10% $ 4,811.99

This product was last offered at the strikethrough price on
10-26-2026

Starting at $ 4,330.61 USD
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Sale - Save 10%
$ 4,811.99

This product was last offered at the strikethrough price on
10-26-2026

Starting at $ 4,330.61 USD
Add to Wish List
Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this axle-back exhaust system from Milltek. This axle-back exhaust system features 80mm (3.15") T304 stainless steel construction, with quad 115mm (4.5") exhaust tips available in multiple finishes. With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.
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Evolution Racewerks Performance Downpipes - F97 X3M, F98 X4M
Evolution Racewerks Performance Downpipes - F97 X3M, F98 X4M ...
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Evolution Racewerks - Corporate Logo
T#:599274
Part#: BM-EXH025
Back Ordered
Starting at $ 1,195.00 USD
Free Shipping
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Starting at $ 1,195.00 USD
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On a turbocharged vehicle, any restriction in the exhaust system reduces peak horsepower. By removing the factory catalytic converter, most of this restriction is removed gaining advantages in more than just peak horsepower. The factory downpipe, while excellent for maintaining strict emission regulations, does nothing to unlock the performance of a turbocharged engine. Due to an internal honeycomb structure that the exhaust gasses must pass through, flow is massively reduced. Additionally, this honeycomb causes turbulence after the converter which slows exhaust flow even further and causes more restriction. If you've ever tried to blow through a coffee straw, you know how your car feels. This not only limits how fast the turbo can spool or come up to speed but also how much air it can move in general. When the internal honeycomb structure is removed in favor of a straight and hollow piece, these issues are alleviated. Not only can the turbocharger come up to max rpm faster, is does this more efficiently and with less work since there is no back-pressure against the turbine wheel. Turbo lag becomes a thing of the past and because of this, the powerband shifts and massive top-end gains can be felt. Constructed out of 100% 304-grade stainless steel and fully mandrel bent, you can be sure that as much time has been put into construction as development. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which Evolution have duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods and the O2 sensor is positioned at the factory location.
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