BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW G42 M240i xDrive B58 3.0L

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Enthusiast Bundles - Corporate Logo
T#:37419762
Part#: 039018LAEBKT
In Stock
Sale - Save 25% $ 2,261.97

This product was last offered at the strikethrough price on
05-05-2026

$ 1,699.99 USD
Sale - Save 25%
$ 2,261.97

This product was last offered at the strikethrough price on
05-05-2026

$ 1,699.99 USD

G42 M240 Performance Valved Cat-Back Exhaust

Unleash the true potential of your M240 with Turner Motorsport’s precision-engineered Cat-Back Exhaust, designed specifically for the B58 engine. From sound and style to pure performance, this exhaust system transforms your driving experience with an exhilarating soundtrack and unmistakable visual flair.

Engineered for performance, this exhaust system replaces the M240’s stock faux exhaust tips with striking quad 3.5" real tips. Made from premium 1.25mm T304 stainless steel, this cat-back exhaust offers superior durability, corrosion resistance, and a sleek look. Integrated valve control lets you adjust the exhaust tone to suit your driving mode, creating a refined, balanced note in comfort mode and an aggressive roar in sport mode. Turner’s unique muffler design maximizes flow when the valve is open, delivering pure, unrestrained sound and performance on demand.

Key Exhaust Features:

Authentic Quad Tips: Upgrade from the stock imitation tips to real, polished quad tips that bring motorsport aesthetics to your M240. Valve-Controlled Sound: The factory valve control allows for sound customization—subtle in comfort mode, powerful in sport mode. Durable Construction: Built from high-grade T304 stainless steel for maximum durability and resistance to the elements. Optimized Flow Design: True 3.0" piping from the downpipe to the muffler, designed without a resonator to keep exhaust flow unrestricted. Performance You Can Feel

Every aspect of the Turner cat-back exhaust is built with the driver in mind. The mandrel-bent, stainless steel piping ensures smooth airflow, while the strategically placed slip joints provide the perfect alignment and adjustability for a seamless, factory-like fit. The result? An unmistakable exhaust note and a substantial power boost.

What’s Included:

3.0" front exhaust section compatible with factory or aftermarket downpipes Lightweight, free-flowing midsection for maximum sound and performance gains Valved rear muffler for adjustable sound profiles Quad 3.5" optional exhaust tips for an aggressive rear profile Valve extension harness and all clamps/hardware for easy, bolt-on installation G42 M240i Aluminum Skid Plate

BMW’s newer high-powered engines, like the B58 and S58, require efficient cooling—but space constraints mean the oil cooler sits dangerously low and exposed. Protect this crucial component with Turner Motorsport’s heavy-duty skid plate. Constructed from 3/16" thick 5052 aluminum, this skid plate shields your oil cooler from debris and road impacts that could lead to severe engine damage. Unlike the factory plastic belly pan, Turner’s skid plate offers unmatched protection without compromising weight, aerodynamics, or cooling efficiency.

Designed to deflect debris while preserving airflow, this skid plate includes flared air channels to maintain cooling performance. It installs easily with factory hardware—no drilling or modification needed—and features a sleek black powder coat finish that’s both durable and stylish.

Skid Plate Benefits:

Enhanced Protection: Protects against rocks, debris, and other hazards that could damage your oil cooler. Factory-Compatible Installation: Bolts directly onto your car with no modification needed. Aerodynamic Design: Preserves factory aerodynamics with cooling vents for optimal airflow to the oil cooler. Durable Construction: Made from 5052 aluminum with a black powder-coated finish for superior strength and longevity. Equip your M240 with Turner Motorsport’s Cat-Back Exhaust and Aluminum Skid Plate and experience a new level of performance and protection—your BMW deserves nothing less!

Show More Show Less
Prosport Performance - Corporate Logo
T#:385019
Part#: HEA-WRAPKIT-50
In Stock
$ 49.99 USD
Free Shipping on orders $49 and up
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!
Show More Show Less
VRSF - Corporate Logo
T#:590389
Part#: 10202011
In Stock
$ 479.99 USD
Free Shipping
$ 479.99 USD
Free Shipping
Reduce back-pressure by eliminating/upgrading the restrictive catalytic converter in the factory downpipe. Expect an increase in power as well as a more aggressive exhaust tone. This downpipe is handcrafted from 4.5" SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow.
Show More Show Less

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

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
Show More Show Less

Bav Auto Oxygen Sensor Tool - Angled Handle - 7/8"
10X Entries Into Our F80 M3 Sweepstakes
Bav Auto Tools - Corporate Logo
T#:580382
Part#: B8800066
Ships in 1 Business Day
Sale - Save 25% $ 49.99

This product was last offered at the strikethrough price on
05-03-2026

$ 37.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 49.99

This product was last offered at the strikethrough price on
05-03-2026

$ 37.49 USD
Free Shipping on orders $49 and up
Slotted, pivoting head has both hexagon and double hexagon drive. Angled handle reaches around obstructions. Fits all Oxygen sensors with 7/8in (22mm) hex.
Prosport Performance - Corporate Logo
T#:385020
Part#: HEA-GWRAP-15
Back Ordered
$ 33.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Genuine BMW - Corporate Logo
T#:59956
Part#: 33306785433
In Stock
7% off MSRP $ 57.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 53.99 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 57.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 53.99 USD
Free Shipping on orders $49 and up
Genuine BMW Collar Screw - M14X112-10.9
Bav Auto Tools - Corporate Logo
T#:580383
Part#: B8800067
Ships in 1 Business Day
Sale - Save 20% $ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD
Free Shipping on orders $49 and up
This 1/2" Drive, 7/8" x 6" Extra Long O2 sensor tool is used to remove difficult to reach oxygen sensors.

Genuine BMW - Corporate Logo
T#:6383
Part#: 07119902368
In Stock
Sale - Save 19% $ 36.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.96 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 36.99

This product was last offered at the strikethrough price on
05-02-2026

$ 29.96 USD
Free Shipping on orders $49 and up
Genuine BMW Sheet Metal Screw.

Prosport Performance - Corporate Logo
T#:385017
Part#: HEA-WRAPKIT-WHT
In Stock at Vendor
$ 31.99 USD
Free Shipping on orders $49 and up
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 Performance - Corporate Logo
T#:385018
Part#: HEA-WRAPKIT-BLK
Ships in 10 Business Days
$ 28.00 USD
Free Shipping on orders $49 and up
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
Eisenmann - Corporate Logo
T#:35525720
Part#: B5472.01024
Ships in 2 Business Days
$ 2,895.00 USD
Free Shipping
$ 2,895.00 USD
Free Shipping

Transform the driving experience of your BMW M240 Coupe with the Eisenmann Performance Rear Exhaust System, a premium exhaust upgrade crafted to enhance sound, aesthetics, and performance. Eisenmann, known for its precision German engineering and expert craftsmanship, delivers an exhaust solution that caters to both performance enthusiasts and those who value refined design.

Crafted from high-grade stainless steel, the Eisenmann Rear Exhaust offers durability and corrosion resistance, even in the harshest conditions. Its optimized exhaust flow reduces backpressure, leading to gains in horsepower and torque, which translates to a more responsive and exhilarating drive. The signature Eisenmann sound profile—deep, rich, and sporty—strikes the perfect balance between an exciting tone on acceleration and a refined note at cruising speeds, enhancing your driving experience without excessive noise.

Designed specifically for the BMW 2 Series Coupe, this rear exhaust guarantees a flawless fit with the car’s factory mounting points, making installation straightforward with no need for modifications. Available in dual and quad polished tailpipe configurations, it adds a touch of sophistication to the vehicle's rear profile. Tailored sound profiles—Sport for daily driving and Race for a more aggressive, track-inspired tone—allow you to personalize your exhaust to match your preferences.

Show More Show Less


VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07...
Fits N54/ N55/ N20/ N26/ S55/ B58 Engines from 2007-2016
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:35154903
Part#: 504010
In Stock
$ 8.99 USD
Free Shipping on orders $49 and up
$ 8.99 USD
Free Shipping on orders $49 and up

This plug is a replacement for the following models: 10901020A, 10901020B, 10901020C, 10901020D, 10301050, 10101020 and any other VRSF chargepipe that utilizes a water injection bung. VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is a crucial component for maintaining peak performance in turbocharged BMW engines. Designed to prevent boost leaks and ensure a secure seal for methanol and water injection ports, this bung plug is crafted from premium materials for long-lasting reliability. Compatible with VRSF chargepipes, it is an ideal solution for BMW enthusiasts seeking precision and durability in their high-performance setups. Available through Turner Motorsport, this part ensures seamless integration with your BMW's engine components.

Benefits: Ensures a secure seal for methanol and water injection ports to prevent boost leaks Built from high-quality materials for superior strength and longevity Compatible with VRSF chargepipes on 07-16 BMW N54, N55, N20, N26, S55, and B58 engines Easy installation minimizes downtime and simplifies engine upgrades Maintains optimal turbo efficiency and performance in high-pressure systems The VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is the ultimate choice for BMW owners committed to maximizing reliability and performance.

Show More Show Less
Bav Auto Exhaust Doughnut Stretcher
10X Entries Into Our F80 M3 Sweepstakes
Bav Auto Tools - Corporate Logo
T#:580373
Part#: B8800051
In Stock
Sale - Save 25% $ 20.99

This product was last offered at the strikethrough price on
05-03-2026

$ 15.74 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 20.99

This product was last offered at the strikethrough price on
05-03-2026

$ 15.74 USD
Free Shipping on orders $49 and up
This tool is not vehicle specific and is a universal tool that may or may not work on all applications. This exhaust doughnut stretcher features an offset J-hook to grab onto the rubber rings used to mount most BMW exhaust systems. Features a large coated handle for a comfortable grip.
Show More Show Less
Genuine BMW - Corporate Logo
T#:29104
Part#: 07130757758
In Stock
$ 3.09 USD
Free Shipping on orders $49 and up
Genuine BMW HEX NUT WIHT FLANGE

Active Autowerke - Corporate Logo
T#:51285638
Part#: 11-125B
Ships in 3 Business Days
New Item
$ 1,956.00 USD
Free Shipping
$ 1,956.00 USD
Free Shipping
For over 40 years, Active Autowerke has been at the forefront of BMW performance, and the G4X M240i axle-back exhaust represents the pinnacle of that development. This system is constructed entirely from TIG-welded 304 stainless steel, offering maximum resistance to corrosion and heat cycles. Unlike universal systems, this exhaust is engineered specifically for the G42 chassis, ensuring that every hanger and flange aligns perfectly. By retaining the factory valve control, this exhaust offers a "no-compromise" solution: it stays quiet and sophisticated when you need it, but opens up for maximum volume and performance when you want it. Each kit is a comprehensive package, providing all hardware required to transform your M240i’s rear section. Key Features: Surgical Precision: Every unit is test-fitted on a dedicated fixture to ensure zero-clearance issues with the chassis or diffuser. Premium Materials: Full 304 Stainless Steel construction ensures a lifetime of performance. OEM Integration: No need for extra wiring or controllers; works seamlessly with your car's computer. Aggressive Rear Stance: Fills the rear bumper cutouts more effectively than the stock rectangular tips. Performance Gains: Improved exhaust scavenging contributes to a more responsive B58 engine. Specifications: Type: Valved Rear Axle-back Exhaust Section SKU: 11-125 Finish: Brushed Stainless (Standard) Hardware: Includes all high-grade connecting hardware Vehicle Fitment: * 2022+ BMW M240i / M240i xDrive (G42 Chassis) Custom Options: Available in multiple tip finishes to match your specific trim package
Show More Show Less

Active Autowerke - Corporate Logo
T#:51285636
Part#: 11-125
Ships in 3 Business Days
New Item
$ 1,899.00 USD
Free Shipping
$ 1,899.00 USD
Free Shipping
For over 40 years, Active Autowerke has been at the forefront of BMW performance, and the G4X M240i axle-back exhaust represents the pinnacle of that development. This system is constructed entirely from TIG-welded 304 stainless steel, offering maximum resistance to corrosion and heat cycles. Unlike universal systems, this exhaust is engineered specifically for the G42 chassis, ensuring that every hanger and flange aligns perfectly. By retaining the factory valve control, this exhaust offers a "no-compromise" solution: it stays quiet and sophisticated when you need it, but opens up for maximum volume and performance when you want it. Each kit is a comprehensive package, providing all hardware required to transform your M240i’s rear section. Key Features: Surgical Precision: Every unit is test-fitted on a dedicated fixture to ensure zero-clearance issues with the chassis or diffuser. Premium Materials: Full 304 Stainless Steel construction ensures a lifetime of performance. OEM Integration: No need for extra wiring or controllers; works seamlessly with your car's computer. Aggressive Rear Stance: Fills the rear bumper cutouts more effectively than the stock rectangular tips. Performance Gains: Improved exhaust scavenging contributes to a more responsive B58 engine. Specifications: Type: Valved Rear Axle-back Exhaust Section SKU: 11-125 Finish: Brushed Stainless (Standard) Hardware: Includes all high-grade connecting hardware Vehicle Fitment: * 2022+ BMW M240i / M240i xDrive (G42 Chassis) Custom Options: Available in multiple tip finishes to match your specific trim package
Show More Show Less
Active Autowerke - Corporate Logo
T#:51285642
Part#: 11-125C
Ships in 3 Business Days
New Item
$ 2,374.00 USD
Free Shipping
$ 2,374.00 USD
Free Shipping
For over 40 years, Active Autowerke has been at the forefront of BMW performance, and the G4X M240i axle-back exhaust represents the pinnacle of that development. This system is constructed entirely from TIG-welded 304 stainless steel, offering maximum resistance to corrosion and heat cycles. Unlike universal systems, this exhaust is engineered specifically for the G42 chassis, ensuring that every hanger and flange aligns perfectly. By retaining the factory valve control, this exhaust offers a "no-compromise" solution: it stays quiet and sophisticated when you need it, but opens up for maximum volume and performance when you want it. Each kit is a comprehensive package, providing all hardware required to transform your M240i’s rear section. Key Features: Surgical Precision: Every unit is test-fitted on a dedicated fixture to ensure zero-clearance issues with the chassis or diffuser. Premium Materials: Full 304 Stainless Steel construction ensures a lifetime of performance. OEM Integration: No need for extra wiring or controllers; works seamlessly with your car's computer. Aggressive Rear Stance: Fills the rear bumper cutouts more effectively than the stock rectangular tips. Performance Gains: Improved exhaust scavenging contributes to a more responsive B58 engine. Specifications: Type: Valved Rear Axle-back Exhaust Section SKU: 11-125 Finish: Brushed Stainless (Standard) Hardware: Includes all high-grade connecting hardware Vehicle Fitment: * 2022+ BMW M240i / M240i xDrive (G42 Chassis) Custom Options: Available in multiple tip finishes to match your specific trim package
Show More Show Less

Active Autowerke - Corporate Logo
T#:51285645
Part#: 11-125CB
Ships in 3 Business Days
New Item
$ 2,469.00 USD
Free Shipping
$ 2,469.00 USD
Free Shipping
For over 40 years, Active Autowerke has been at the forefront of BMW performance, and the G4X M240i axle-back exhaust represents the pinnacle of that development. This system is constructed entirely from TIG-welded 304 stainless steel, offering maximum resistance to corrosion and heat cycles. Unlike universal systems, this exhaust is engineered specifically for the G42 chassis, ensuring that every hanger and flange aligns perfectly. By retaining the factory valve control, this exhaust offers a "no-compromise" solution: it stays quiet and sophisticated when you need it, but opens up for maximum volume and performance when you want it. Each kit is a comprehensive package, providing all hardware required to transform your M240i’s rear section. Key Features: Surgical Precision: Every unit is test-fitted on a dedicated fixture to ensure zero-clearance issues with the chassis or diffuser. Premium Materials: Full 304 Stainless Steel construction ensures a lifetime of performance. OEM Integration: No need for extra wiring or controllers; works seamlessly with your car's computer. Aggressive Rear Stance: Fills the rear bumper cutouts more effectively than the stock rectangular tips. Performance Gains: Improved exhaust scavenging contributes to a more responsive B58 engine. Specifications: Type: Valved Rear Axle-back Exhaust Section SKU: 11-125 Finish: Brushed Stainless (Standard) Hardware: Includes all high-grade connecting hardware Vehicle Fitment: * 2022+ BMW M240i / M240i xDrive (G42 Chassis) Custom Options: Available in multiple tip finishes to match your specific trim package
Show More Show Less
Genuine BMW - Corporate Logo
T#:55245805
Part#: 1830XXKT
Ships in 2 Business Days
New Item
$ 48.93 USD
Free Shipping on orders $49 and up
Keep your exhaust valve functioning precisely under all driving conditions with this Genuine BMW Exhaust Flap Hardware Refresh Kit.