BMW Catback Exhaust Systems for BMW F91 M8 S63 4.4L

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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.
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Akrapovic Evolution Line Cat Back Titanium Exhaust System - Carbon T...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Akrapovic - Corporate Logo
T#:7813205
Part#: S-BM/T/23
In Stock at Vendor
$ 11,724.99 USD
$ 11,724.99 USD
Constructed from high-grade lightweight titanium alloys, the Evolution Line (Titanium) exhaust system has been perfectly tuned to deliver the very best aural experience in all driving modes. Through extensive testing and development, the Akrapovič sound engineers have coaxed a deep, sporty, higher-frequency V8 sound from the car’s turbo engine, more akin to that of a muscle car, while keeping it smooth and eliminating any drone that might hamper the enjoyment. The full titanium exhaust system is finished with two sets of carbon-fibre / titanium tailpipes coming from a central muffler layout featuring two valves, one located on either side of the muffler. The housings are cast in-house in the Akrapovič foundry, and there is a cast collector on the link pipe, where gases from both sides of the engine mix, all designed to create a perfect sound. This plug-and-play exhaust system can be further regulated with the addition of the Akrapovič Sound Kit to control the valves in the exhaust and switch between the sound modes. Fittment notice:This system does not fit on vehicles equipped with Otto particulate filter (OPF). This exhaust system is not CARB approved
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Valvetronic Designs Valved Sport Exhaust System - 4.0" Raw Titanium B...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Valvetronic Designs - Corporate Logo
T#:53008796
Part#: F91M8VSESTITIBRT
Ships in 1 Business Day
New Item
$ 4,799.00 USD
Free Shipping
$ 4,799.00 USD
Free Shipping
The BMW M8 is a powerhouse, but from the factory, its sound doesn’t quite match its performance. At Valvetronic Designs, we’ve engineered a Titanium Valved Exhaust System to change that—delivering a sound experience worthy of the M8’s incredible capabilities. Crafted from our signature lightweight Grade 5 Titanium, this system runs a full 3-inch diameter from inlet to outlet for maximum flow. A large cross-section X-pipe is strategically placed to optimize exhaust scavenging, increasing performance while creating an aggressive yet refined tone.
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Milltek Sport Cat Back System with Valved Rear Silencer Bypass - Brus...
For Vehicles With OPF (2020+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:4826887
Part#: SSXBM1187
Ships in 3 Business Days
$ 4,862.99 USD
Free Shipping on orders $49 and up
$ 4,862.99 USD
Free Shipping on orders $49 and up
Milltek Sport was founded by car enthusiasts for car enthusiasts. Based in the UK, their products are developed and tested at their development center at Nurburgring in Germany. The result is a wide range of top of the line exhaust systems that can bring more life to your car! Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment. Included with this catback system is Milltek's Valved Rear Silencer Bypass system kit. The GPF/OPF on newer BMWs almost acts as a secondary catalyst. In response, Milltek has provided the option to remove this component, similar to a Decat system. This bypass deletes the GPF/OPF, removing it from the exhaust system to better improve performance. - GPF/OPF Bypass software is required on the vehicles ECU in most cases. Includes all hardware required to install. *Note: Fits OE Downpipes and OE OPF/GPF System. Includes: Full cat-back exhaust Brushed Titanium tips Valved Rear Silencer Bypass kit
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Milltek Sport Cat Back System with Valved Rear Silencer Bypass - Cera...
For Vehicles With OPF (2020+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:4826889
Part#: SSXBM1186
Ships in 3 Business Days
$ 4,549.99 USD
$ 4,549.99 USD
Milltek Sport was founded by car enthusiasts for car enthusiasts. Based in the UK, their products are developed and tested at their development center at Nurburgring in Germany. The result is a wide range of top of the line exhaust systems that can bring more life to your car! Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment. Included with this catback system is Milltek's Valved Rear Silencer Bypass system kit. The GPF/OPF on newer BMWs almost acts as a secondary catalyst. In response, Milltek has provided the option to remove this component, similar to a Decat system. This bypass deletes the GPF/OPF, removing it from the exhaust system to better improve performance. - GPF/OPF Bypass software is required on the vehicles ECU in most cases. Includes all hardware required to install. *Note: Fits OE Downpipes and OE OPF/GPF System. Includes: Full cat-back exhaust Cerakote Black tips Valved Rear Silencer Bypass kit
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Milltek Sport Cat Back System with Valved Rear Silencer Bypass - Burn...
For Vehicles With OPF (2020+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:4826888
Part#: SSXBM1188
Ships in 3 Business Days
$ 5,076.99 USD
Free Shipping on orders $49 and up
$ 5,076.99 USD
Free Shipping on orders $49 and up
Milltek Sport was founded by car enthusiasts for car enthusiasts. Based in the UK, their products are developed and tested at their development center at Nurburgring in Germany. The result is a wide range of top of the line exhaust systems that can bring more life to your car! Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment. Included with this catback system is Milltek's Valved Rear Silencer Bypass system kit. The GPF/OPF on newer BMWs almost acts as a secondary catalyst. In response, Milltek has provided the option to remove this component, similar to a Decat system. This bypass deletes the GPF/OPF, removing it from the exhaust system to better improve performance. - GPF/OPF Bypass software is required on the vehicles ECU in most cases. Includes all hardware required to install. *Note: Fits OE Downpipes and OE OPF/GPF System. Includes: Full cat-back exhaust Burnt/Blue Titanium tips Valved Rear Silencer Bypass kit
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Milltek Sport Cat Back System with Valved Rear Silencer Bypass - Carb...
For Vehicles With OPF (2020+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:4826891
Part#: SSXBM1189
Ships in 3 Business Days
$ 4,981.99 USD
$ 4,981.99 USD
Milltek Sport was founded by car enthusiasts for car enthusiasts. Based in the UK, their products are developed and tested at their development center at Nurburgring in Germany. The result is a wide range of top of the line exhaust systems that can bring more life to your car! Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment. Included with this catback system is Milltek's Valved Rear Silencer Bypass system kit. The GPF/OPF on newer BMWs almost acts as a secondary catalyst. In response, Milltek has provided the option to remove this component, similar to a Decat system. This bypass deletes the GPF/OPF, removing it from the exhaust system to better improve performance. - GPF/OPF Bypass software is required on the vehicles ECU in most cases. Includes all hardware required to install. *Note: Fits OE Downpipes and OE OPF/GPF System. Includes: Full cat-back exhaust Carbon Jet Black tips Valved Rear Silencer Bypass kit
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Valvetronic Designs Valved Sport Exhaust System - 4.0" 1x1 Carbon Fib...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Valvetronic Designs - Corporate Logo
T#:53008795
Part#: F91M8VSESTIRC
Ships in 1 Business Day
New Item
$ 4,799.00 USD
Free Shipping
$ 4,799.00 USD
Free Shipping
The BMW M8 is a powerhouse, but from the factory, its sound doesn’t quite match its performance. At Valvetronic Designs, we’ve engineered a Titanium Valved Exhaust System to change that—delivering a sound experience worthy of the M8’s incredible capabilities. Crafted from our signature lightweight Grade 5 Titanium, this system runs a full 3-inch diameter from inlet to outlet for maximum flow. A large cross-section X-pipe is strategically placed to optimize exhaust scavenging, increasing performance while creating an aggressive yet refined tone.
Show More Show Less
Milltek Sport Cat Back System with Valved Rear Silencer Bypass - Poli...
For Vehicles With OPF (2020+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:4826890
Part#: SSXBM1185
Ships on Jul 15, 2026
$ 4,130.99 USD
Free Shipping
$ 4,130.99 USD
Free Shipping
Milltek Sport was founded by car enthusiasts for car enthusiasts. Based in the UK, their products are developed and tested at their development center at Nurburgring in Germany. The result is a wide range of top of the line exhaust systems that can bring more life to your car! Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment. Included with this catback system is Milltek's Valved Rear Silencer Bypass system kit. The GPF/OPF on newer BMWs almost acts as a secondary catalyst. In response, Milltek has provided the option to remove this component, similar to a Decat system. This bypass deletes the GPF/OPF, removing it from the exhaust system to better improve performance. - GPF/OPF Bypass software is required on the vehicles ECU in most cases. Includes all hardware required to install. *Note: Fits OE Downpipes and OE OPF/GPF System. Includes: Full cat-back exhaust Polished tips Valved Rear Silencer Bypass kit
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Akrapovič Exhaust Sound Kit - F91 F92 F93 M8
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Akrapovic - Corporate Logo
T#:599277
Part#: P-HF1263
Back Ordered
$ 1,203.99 USD
Free Shipping on orders $49 and up
The optional Akrapovič Sound Kit enables owners of selected Akrapovič car exhausts to control the sound of the system from the cockpit of their machine. Using Akrapovič technology, drivers can easily switch between the quiet mode and a sportier sound. With the use of a receiver (already included in evolution system) to drive the actuators that open or close the valves at the end of the exhaust system, drivers can use the Sound Remote Controller or the new smartphone app (for iOS and Android) to regulate the valves. With the use of the optional Akrapovič Sound Kit, the ECE type approval is no longer valid. Pictures are symbolic.
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