BMW Catback Exhaust Systems for BMW E90 M3 S65 4.0L

Clear BMW chassis

Please ensure your correct model is selected

Catback Exhaust systems are designed to completely replace everything from your cats all the way back to your exhaust tips. Traditionally, if you are planning on upgrading your entire exhaust system, you will also need headers and downpipes.
Sort By:

Turner Motorsport - Corporate Logo
T#:11137924
Part#: 013888LA01-01KT1
Ships in 3 Business Days
$ 1,531.04

This product was last offered at the strikethrough price on
06-14-2026

$ 1,527.54 USD
Free Shipping
$ 1,527.54 USD
Free Shipping

New to our line of exceptional performance upgrades for your BMW, the Turner Motorsport E9X M3 (S65) Valved Axle-back exhaust system is here to improve your driving experience with hearty exhaust notes and a noticeable bump in performance. With the muffler valves closed, this exhaust is quite unassuming. When you open up the valves, using the supplied valve controller, this exhaust transforms your car, giving your car a menacing growl!

Now, we get it, not everyone can, or wants to delete their factory cats. Whether it be emissions testing or a check engine light, the smell of unfiltered exhaust, the very aggressive sound, or warranty reasons. Whatever the reason, We've got you covered! This exhaust setup leaves all 4 factory cats in place, making it 100% emissions legal for everyone, even California!

This exhaust sports Mandrel bent dual 2.5” 304SS pipes with a brushed finish, with exhaust gases flowing through efficient piping to High flow, valved, stainless steel mufflers. Designed to mount with the factory exhaust hangers, this exhaust is a bolt-on replacement for the OE version. To help reduce the time you spend under the car installing the system, Accuseal slip-fit joints are included to make fitment as easy as possible. The Turner Motorsport full exhaust system includes a High flow, valved, stainless-steel muffler and is available as an Axle Back, Cat-back system, as well as a full Turbo back system.

Give your M3 the dual-purpose exhaust system that satisfies both your neighbors and your need for sound with the Turner Motorsport E9X M3 full exhaust system!

Kit Includes:

Turner Axle back Exhaust with X pipe
Turner Adapter pipes for Factory Mid Pipes
Turner Muffler Valve Controller Kit
Turner Engraved Exhaust Tips
Features:

Mandrel bent dual 2.5” 304SS pipe with brushed finish
Turner Engraved Brushed exhaust tips
High flow, valved, stainless steel mufflers
Accuseal slip fit joints for easy fitment
Utilizes factory exhaust hangers

Show More Show Less
Turner Motorsport - Corporate Logo
T#:5135646
Part#: 013888LA01-01KT
Ships in 3 Business Days
Sale - Save 20% $ 1,768.99

This product was last offered at the strikethrough price on
10-05-2026

$ 1,415.19 USD
Free Shipping
Sale - Save 20%
$ 1,768.99

This product was last offered at the strikethrough price on
10-05-2026

$ 1,415.19 USD
Free Shipping
New to our line of exceptional performance upgrades for your BMW, the Turner Motorsport E9X M3 (S65) Valved Axle-back exhaust system is here to improve your driving experience with hearty exhaust notes and a noticeable bump in performance. With the muffler valves closed, this exhaust is quite unassuming. Nobody will suspect your car even has an aftermarket exhaust system, as it sounds very much like the factory system. But, when you open up the valves, using the supplied valve controller, this exhaust transforms your car, giving your car a menacing growl!

Now, we get it, not everyone can, or wants to delete their factory cats. Whether it be emissions testing or a check engine light, the smell of unfiltered exhaust, the very aggressive sound, or warranty reasons. Whatever the reason, We've got you covered! This exhaust setup leaves all 4 factory cats in place, making it 100% emissions legal for everyone, even California!

This exhaust sports Mandrel bent dual 2.5” 304SS pipes with a brushed finish, with exhaust gases flowing through efficient piping to High flow, valved, stainless steel mufflers. Designed to mount with the factory exhaust hangers, this exhaust is a bolt-on replacement for the OE version. To help reduce the time you spend under the car installing the system, Accuseal slip-fit joints are included to make fitment as easy as possible. The Turner Motorsport full exhaust system includes a High flow, valved, stainless-steel muffler and is available as an Axle Back, Cat-back system, as well as a full Turbo back system.

Give your M3 the dual-purpose exhaust system that satisfies both your neighbors and your need for sound with the Turner Motorsport E9X M3 full exhaust system!

Kit Includes:

Turner Axle back Exhaust with X pipe
Turner Adapter pipes for Factory Mid Pipes
Turner Muffler Valve Controller Kit
Turner Engraved Exhaust Tips
Features:

Mandrel bent dual 2.5” 304SS pipe with brushed finish
Turner Engraved Polished exhaust tips
High flow, valved, stainless steel mufflers
Accuseal slip fit joints for easy fitment
Utilizes factory exhaust hangers
Show More Show Less
Turner Motorsport - Corporate Logo
T#:14816651
Part#: 013888LA0102T
Ships in 3 Business Days
Sale - Save 10% $ 2,902.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 2,612.69 USD
Free Shipping
Sale - Save 10%
$ 2,902.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 2,612.69 USD
Free Shipping

With the heightened popularity of the Turner E9x exhaust, we do not want to limit your choices when it comes to appearance. Pair this ultra lightweight, exotic sounding exhaust with your choice of exhaust tip! Our Turner Motorsport E9X M3 (S65) Titanium Valved Axle-back exhaust system is here to improve your driving experience with hearty exhaust notes and a noticeable bump in performance. With the muffler valves closed, this exhaust is both tame and fine tuned. Nobody will suspect your car even has an aftermarket exhaust system, it will sound similar to the factory system but with the perfect hint of exotic character. When you open up the valves, using the supplied valve controller, this exhaust transforms your car into the exotic beast that it is!

Now, we get it, not everyone can, or wants to delete their factory cats. Whether it be emissions testing or a check engine light, the smell of unfiltered exhaust, the very aggressive sound, or warranty reasons. Whatever the reason, We've got you covered! This exhaust setup leaves all 4 factory cats in place, making it 100% emissions legal for everyone.

This exhaust sports Mandrel bent dual 2.5” Ti22 pipes, with exhaust gases flowing through efficient piping to High flow, valved, Ti22 mufflers. Designed to mount with the factory exhaust hangers, this exhaust is a bolt-on replacement for the OE version. To help reduce the time you spend under the car installing the system, Accuseal slip-fit joints are included to make fitment as easy as possible. The Turner Motorsport full exhaust system includes a High flow, valved,Ti22 muffler and is available as an Axle Back, Cat-back system, as well as a full Turbo back system.

Give your M3 the dual-purpose exhaust system that satisfies your need for sound while having the ability to drive through the neighborhood at night with the Turner Motorsport E9X M3 full exhaust system!

Kit Includes:

Turner Axle back Exhaust with X pipe
Turner Adapter pipes for Factory Mid Pipes
Turner Muffler Valve Controller Kit
Optional 2.5" to 3.5" Exhaust Tips
Features:

Mandrel bent dual 2.5” Ti22 pipe with brushed finish
High flow, valved, titanium mufflers
Accuseal slip fit joints for easy fitment
Utilizes factory exhaust hangers

Show More Show Less

Turner Motorsport - Corporate Logo
T#:5416749
Part#: 013888LA01-02KT
Ships in 3 Business Days
Sale - Save 10% $ 2,974.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2,676.74 USD
Free Shipping
Sale - Save 10%
$ 2,974.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2,676.74 USD
Free Shipping
New to our line of exceptional performance upgrades for your BMW, the Turner Motorsport E9X M3 (S65) Titanium Valved Axle-back exhaust system is here to improve your driving experience with hearty exhaust notes and a noticeable bump in performance. With the muffler valves closed, this exhaust is both tame and fine tuned. Nobody will suspect your car even has an aftermarket exhaust system, it will sound like the factory system but with the perfect hint of exotic character. When you open up the valves, using the supplied valve controller, this exhaust transforms your car into the exotic beast that it is!

Now, we get it, not everyone can, or wants to delete their factory cats. Whether it be emissions testing or a check engine light, the smell of unfiltered exhaust, the very aggressive sound, or warranty reasons. Whatever the reason, We've got you covered! This exhaust setup leaves all 4 factory cats in place, making it 100% emissions legal for everyone.

This exhaust sports Mandrel bent dual 2.5” Ti22 pipes, with exhaust gases flowing through efficient piping to High flow, valved, Ti22 mufflers. Designed to mount with the factory exhaust hangers, this exhaust is a bolt-on replacement for the OE version. To help reduce the time you spend under the car installing the system, Accuseal slip-fit joints are included to make fitment as easy as possible. The Turner Motorsport full exhaust system includes a High flow, valved, Ti22 muffler and is available as an Axle Back, Cat-back system, as well as a full Turbo back system.

Give your M3 the dual-purpose exhaust system that satisfies your need for sound while having the ability to drive through the neighborhood at night with the Turner Motorsport E9X M3 full exhaust system!

Kit Includes:

Turner Axle back Exhaust with X pipe
Turner Adapter pipes for Factory Mid Pipes
Turner Muffler Valve Controller Kit
Turner Engraved Exhaust Tips
Features:

Mandrel bent dual 2.5” Ti22 pipe with brushed finish
Turner Engraved Polished exhaust tips
High flow, valved, Ti22 mufflers
Accuseal slip fit joints for easy fitment
Utilizes factory exhaust hangers
Show More Show Less

Corsa - Corporate Logo
T#:26638247
Part#: 14569BLK
Back Ordered
8% off MSRP $ 2,923.99

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

$ 2,682.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 2,923.99

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

$ 2,682.99 USD
Free Shipping on orders $49 and up
Selecting an aftermarket cat-back exhaust system can be daunting due to the multitude of options available. CORSA Performance Cat-Back Exhausts simplifies this choice by focusing on delivering precisely what you desire to enhance your driving experience. *Aggressive Performance Sound* Our systems are meticulously engineered to match the specific make, model, and harmonics of your vehicle, providing an acoustically styled exhaust note that reflects both the car and its owner's personality. *No Drone* Our RSC™ technology sets us apart by eliminating "problem" frequencies that cause interior drone or resonance at cruising speeds. With CORSA, you can enjoy your car's sound at idle, during acceleration, and while cruising without any unwanted noise. *Improved Horsepower And Torque* Our patented non-restrictive Straight-through design reduces back pressure, unlocking additional power and torque for enhanced performance. *Potential For Better Fuel Economy* Reduced back pressure and increased power lead to improved engine efficiency, potentially resulting in better fuel economy. *Premium 304L Stainless Steel Construction* Constructed from premium 304L stainless steel and devoid of cheap, easily degraded packing materials, our exhaust systems are built to last. *Limited Lifetime Warranty* Backed by our Limited Lifetime Warranty, you can trust that our exhaust systems will endure for years to come. *Includes All Necessary Hardware And Full Color Instructions* Our systems include high-quality TORCA Clamps made from 304SS, along with detailed instructions featuring full-color photos for a straightforward installation process. *50 State Emissions Legal* Designed to install rearward of the factory catalytic converter, our systems ensure compliance with emissions regulations across all 50 states. *Handcrafted In The USA* Each system is proudly handcrafted in Berea, OH, USA, reflecting our commitment to quality craftsmanship and American manufacturing.
Show More Show Less
Turner Motorsport - Corporate Logo
T#:10714276
Part#: 013888LA01-02KT1
Ships in 3 Business Days
Sale - Save 10% $ 3,013.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2,712.59 USD
Free Shipping
Sale - Save 10%
$ 3,013.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2,712.59 USD
Free Shipping

New to our line of exceptional performance upgrades for your BMW, the Turner Motorsport E9X M3 (S65) Titanium Valved Axle-back exhaust system is here to improve your driving experience with hearty exhaust notes and a noticeable bump in performance. With the muffler valves closed, this exhaust is both tame and fine tuned. Nobody will suspect your car even has an aftermarket exhaust system, it will sound similar to the factory system but with the perfect hint of exotic character. When you open up the valves, using the supplied valve controller, this exhaust transforms your car into the exotic beast that it is!

Now, we get it, not everyone can, or wants to delete their factory cats. Whether it be emissions testing or a check engine light, the smell of unfiltered exhaust, the very aggressive sound, or warranty reasons. Whatever the reason, We've got you covered! This exhaust setup leaves all 4 factory cats in place, making it 100% emissions legal for everyone.

This exhaust sports Mandrel bent dual 2.5” Ti22 pipes, with exhaust gases flowing through efficient piping to High flow, valved, Ti22 mufflers. Designed to mount with the factory exhaust hangers, this exhaust is a bolt-on replacement for the OE version. To help reduce the time you spend under the car installing the system, Accuseal slip-fit joints are included to make fitment as easy as possible. The Turner Motorsport full exhaust system includes a High flow, valved,Ti22 muffler and is available as an Axle Back, Cat-back system, as well as a full Turbo back system.

Give your M3 the dual-purpose exhaust system that satisfies your need for sound while having the ability to drive through the neighborhood at night with the Turner Motorsport E9X M3 full exhaust system!

Kit Includes:

Turner Axle back Exhaust with X pipe
Turner Adapter pipes for Factory Mid Pipes
Turner Muffler Valve Controller Kit
Turner Engraved Exhaust Tips
Features:

Mandrel bent dual 2.5” Ti22 pipe with brushed finish
Turner Engraved Brushed exhaust tips
High flow, valved, stainless steel mufflers
Accuseal slip fit joints for easy fitment
Utilizes factory exhaust hangers

Show More Show Less

AFE - Corporate Logo
T#:359941
Part#: 49-36311-P
Ships in 3 Business Days
20% off MSRP $ 2,797.99

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

$ 2,238.00 USD
20% off MSRP
$ 2,797.99

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

$ 2,238.00 USD

This system is constructed of 2.50" diameter, mandrel bent, TIG-welded, 304 stainless steel, brushed finish tubing and uses all factory mounting locations for an approximate 1 hour install time. In recent testing, this exhaust system produced 12 horsepower and 11 lbs. x ft. of torque. This unique system utilizes 3.5" diameter 304 polished laser etched quad tips that fit perfectly in your stock bumper cutouts.

304 Stainless Steel:
This unique exhaust system uses 2.5" diameter 304 Stainless Steel that is TIG-welded and has a hand brushed finish.

304 Stainless Steel Polished Quad Tips:
3.5" diameter polished tips are used for and aggressive yet sporty look.

Dual Mufflers:
The dual mufflers consist of a single in, dual out, free flowing design, giving an aggressive sound at high RPM's, yet maintaining a subtle tone at cruising speeds.

Uses OE Mounting Locations:
This system uses factory mounting locations providing stability and hassle-free installation with no modifications necessary.

Does not require CARB certification

Show More Show Less
AFE - Corporate Logo
T#:359942
Part#: 49-36311-C
Back Ordered
$ 2,998.00 USD
$ 2,998.00 USD

This system is constructed of 2.50" diameter, mandrel bent, TIG-welded, 304 stainless steel, brushed finish tubing and uses all factory mounting locations for an approximate 1 hour install time. In recent testing, this exhaust system produced 12 horsepower and 11 lbs. x ft. of torque. This race inspired system is 15 lbs. lighter than the factory exhaust system and utilizes race tested and proven 3" carbon fiber quad tips to withstand extreme temperatures and weather conditions.

304 Stainless Steel:
This unique exhaust system uses 2.5" diameter 304 Stainless Steel that is TIG-welded and has a hand brushed finish.

Carbon Fiber Quad Tips:
Race tested and proven, carbon fiber quad tips are used for weight savings and a sporty look.

Dual Mufflers:
The dual mufflers consist of a single in, dual out, free flowing design, giving an aggressive sound at high RPM's, yet maintaining a subtle tone at cruising speeds.

Uses OE Mounting Locations:
This system uses factory mounting locations providing stability and hassle-free installation with no modifications necessary.

Legality:
This part does not require a CARB EO#

Show More Show Less

Corsa - Corporate Logo
T#:26671605
Part#: 14569
Back Ordered
8% off MSRP $ 2,836.99

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

$ 2,602.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 2,836.99

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

$ 2,602.99 USD
Free Shipping on orders $49 and up
Corsa thrives from the use of advanced technologies to develop exhaust systems that deliver an unmistakable exhaust note. Each exhaust system is customized to be a perfect match on meeting the demands of the vehicle's owner. Corsa also understands that it's not always about just sound but also about the performance it brings to the table by reducing the amount of restrictions. The S65 engine in the M3 is a remarkable achievement in BMW engines. It's been proven to deliver awesome power and speed while it's deep growl lets you know it's coming. Corsa has developed an exhaust that will give you more of that V8 sound without ruining the integrity of your vehicle. Features: Full Cat-Back 3" quad, round polished stainless tips T304 stainless steel Made in the USA Lifetime Warranty
Show More Show Less