BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW G42 M240i xDrive B58 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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Milltek Sport Performance Cat Back Exhaust System - BMW G42 M240i xDrive
Milltek Sport Performance Cat Back Exhaust System - BMW G42 M240i xDr...
Milltek Sport - Corporate Logo
T#:26271830
Part#: SSXBM125X
Ships in 5 Business Days
Sale - Save 10% $ 2,855.99

This product was last offered at the strikethrough price on
08-29-2026

Starting at $ 2,570.25 USD
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Sale - Save 10%
$ 2,855.99

This product was last offered at the strikethrough price on
08-29-2026

Starting at $ 2,570.25 USD
Add to Wish List
Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. This cat-back exhaust system features 76.20mm (3.00") T304 stainless steel construction, with quad 100mm (4") 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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Catback Exhaust - Black Tips
Catback Exhaust - Black Tips
Milltek Sport - Corporate Logo
T#:18401896
Part#: SSXBM1224-1
Ships in 5 Business Days
Sale - Save 10% $ 3,083.00

This product was last offered at the strikethrough price on
08-29-2026

$ 2,774.70 USD
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Sale - Save 10%
$ 3,083.00

This product was last offered at the strikethrough price on
08-29-2026

$ 2,774.70 USD
Add to Wish List
Prosport Titanium Exhaust Wrap - 2" x 50
Prosport Titanium Exhaust Wrap - 2" x 50
Prosport Performance - Corporate Logo
T#:385019
Part#: HEA-WRAPKIT-50
In Stock
$ 49.99 USD
Free Shipping on orders $49 and up
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$ 49.99 USD
Free Shipping on orders $49 and up
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Constructed for durability with a tight weave, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility. Fiberglass is rated for 1200 degrees, however, this titanium wrap can withstand 1800 degrees!
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Titanium Exhaust Wrap - 2" X 25'
Titanium Exhaust Wrap - 2" X 25'
Prosport Performance - Corporate Logo
T#:385025
Part#: HEA-WRAPKIT-25
Ships in 1 Business Day
$ 29.99 USD
Free Shipping on orders $49 and up
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$ 29.99 USD
Free Shipping on orders $49 and up
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Constructed for durability with a tight weave, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility. Fiberglass is rated for 1200 degrees, however, this titanium wrap can withstand 1800 degrees! 

Key Features:

  • 2" wide x 1/16" thick
  • Durable, tightly woven, 100% fiberglass
  • Reduce under hood temperatures
  • Protect other engine components
  • Protect your hands/arms from burns
  • Each roll comes with 5 FREE, 14" long stainless steel zip ties
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Prosport Gold Heat Reflective Tape - 2" x 15'
Prosport Gold Heat Reflective Tape - 2" x 15'
Prosport Performance - Corporate Logo
T#:385020
Part#: HEA-GWRAP-15
Back Ordered
$ 33.99 USD
Free Shipping on orders $49 and up
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$ 33.99 USD
Free Shipping on orders $49 and up
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Constructed of laminated light-weight glass cloth, this gold reflective heat tape is designed to reflect 80% of radiant heat. With excellent pliability, this tape is easy to install. It's as simple as peel and stick.
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Prosport Fiberglass Exhaust Wrap - White - 2" x 50'
Prosport Fiberglass Exhaust Wrap - White - 2" x 50'
Prosport Performance - Corporate Logo
T#:385017
Part#: HEA-WRAPKIT-WHT
In Stock at Vendor
$ 31.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 31.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Constructed of durable, tight-woven fiberglass, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility.
Show More Show Less
Prosport Fiberglass Exhaust Wrap - Black - 2" x 50'
Prosport Fiberglass Exhaust Wrap - Black - 2" x 50'
Prosport Performance - Corporate Logo
T#:385018
Part#: HEA-WRAPKIT-BLK
Ships in 10 Business Days
$ 28.00 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 28.00 USD
Free Shipping on orders $49 and up
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Constructed of durable, tight-woven fiberglass, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility.
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Milltek Sport Performance Axle Back Exhaust System - BMW G42 M240i xDrive
Milltek Sport Performance Axle Back Exhaust System - BMW G42 M240i xD...
Milltek Sport - Corporate Logo
T#:26271831
Part#: SSXBM121X
Ships in 5 Business Days
Sale - Save 10% $ 2,030.99

This product was last offered at the strikethrough price on
08-29-2026

Starting at $ 1,827.77 USD
Add to Wish List
Sale - Save 10%
$ 2,030.99

This product was last offered at the strikethrough price on
08-29-2026

Starting at $ 1,827.77 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 76.20mm (3.00") T304 stainless steel construction, with quad 100mm (4") 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 handled directly by ECS Tuning.
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Active Valve Control
Active Valve Control
Milltek Sport - Corporate Logo
T#:35391006
Part#: SSXBM1275
Special Order: No Guaranteed ETA
Sale - Save 10% $ 549.99

This product was last offered at the strikethrough price on
08-29-2026

$ 494.98 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 10%
$ 549.99

This product was last offered at the strikethrough price on
08-29-2026

$ 494.98 USD
Free Shipping on orders $49 and up
Add to Wish List
Milltek Sport's Active Valve Control (AVC) offers advanced exhaust management for vehicles with factory-installed valves and Milltek's performance exhaust systems with valve control upgrades. Seamlessly integrated, AVC allows drivers to control the opening and closing of the exhaust valves, enabling precise adjustments to both sound and volume to suit their preferences. For select models, AVC features optional app control through iPhone or Android devices, providing convenient customization at the driver’s fingertips. With full CAN BUS integration and built-in safety features, the system guarantees reliable performance while giving complete control over the exhaust’s acoustic output.
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