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BMW Downpipes

When BMW began to offer more and more forced induction vehicles, some enthusiasts were upset and others were excited about the big power potential. While we love older, naturally aspirated BMWs, we LOVE forced induction BMWs. Upgrading your downpipe (or downpipes) is one of the easiest ways to reduce restriction and add more power to your BMW. We offer several brands, including our own designs, of downpipes for your BMW!
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CTS - Corporate Logo
T#:27472196
Part#: CTS-EXHDP0023CAT
In Stock
Sale - Save 5% $ 379.99

This product was last offered at the strikethrough price on
09-29-2026

$ 359.99 USD
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Sale - Save 5%
$ 379.99

This product was last offered at the strikethrough price on
09-29-2026

$ 359.99 USD
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Unleash the full potential of your BMW N55 (Electric Wastegate) with the CTS Turbo High-flow Cat, meticulously designed to optimize exhaust flow and deliver unmatched power gains. Bid farewell to factory constraints and welcome superior performance and enhanced sound!

Utilizing advanced CAD technology, this component seamlessly replaces your factory downpipe, ensuring a precise fit. Crafted from robust T304 stainless steel and expertly hand TIG welded with back purging, it ensures long-lasting and dependable performance.

Highlighted Features:

Precision-designed and rigorously tested for peak performance T304 stainless steel construction with TIG welded back-purged joints Direct replacement for the restrictive factory downpipe Substantial power increase without sacrificing performance Creates an exhilarating sporty exhaust sound while maintaining a refined tone during normal driving Eliminates drone typically found with factory exhaust setups Elevate your BMW N55's performance and sound with the CTS Turbo High-flow Cat, engineered for exceptional quality and outstanding performance on the road.

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Downpipe To Cat-Back Reducer - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:22427013
Part#: 006555ECS06B
In Stock
Sale - Save 25% $ 39.99

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

$ 29.99 USD
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Sale - Save 25%
$ 39.99

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

$ 29.99 USD
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Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

  • Allows for seamless connection between downpipe and cat-back exhaust
  • High-quality construction for durability
  • Tight seal reduces exhaust leaks
  • Enhances overall exhaust flow
  • Easy installation and compatibility with various exhaust systems
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CTS - Corporate Logo
T#:4333555
Part#: EXHDP0034CAT
Ships in 8 Business Days
Sale - Save 10% $ 799.00

This product was last offered at the strikethrough price on
09-29-2026

$ 719.99 USD
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Sale - Save 10%
$ 799.00

This product was last offered at the strikethrough price on
09-29-2026

$ 719.99 USD
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CTS Turbo High-Flow CATS are made to maximize exhaust flow for the highest power gains. Designed using the latest in CAD technology; this part is made to fit perfectly in place of the restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. In addition to unleashing the power and performance of your 4.4 Twin Turbo, CTS' High-Flow CATS will make your vehicle sound like it really should. When installed with factory exhaust, it produces a louder and deeper growl with a much more pronounced exhaust “crackle” on downshift. While up-shifting you will enjoy a confident “punch!” as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system. Product Details: Designed and tested on a real car in the real world 200 cell catalytic converter Cast T304 stainless steel, TIG welded back-purged construction Replaces restrictive factory catalytic converter Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Fitment: 2012-2016 F10 BMW M5 2012-2016 F10 BMW M5 Competition 2012-2016 F06/12/13 M6 2012-2016 F06/12/13 M6 Competition To remove the CEL that will occur, proper stage 2 tuning software must be used.
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Milltek Sport - Corporate Logo
T#:590757
Part#: SSXM429
Ships on Oct 20, 2026
Sale - Save 10% $ 1,577.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,419.46 USD
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Sale - Save 10%
$ 1,577.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,419.46 USD
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Made in the UK for the MINI enthusiast

Milltek Sport - Corporate Logo
T#:582138
Part#: SSXM015
In Stock
Sale - Save 10% $ 1,006.99

This product was last offered at the strikethrough price on
09-18-2026

$ 906.18 USD
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Sale - Save 10%
$ 1,006.99

This product was last offered at the strikethrough price on
09-18-2026

$ 906.18 USD
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Made in the UK for the MINI enthusiast
CTS - Corporate Logo
T#:4333554
Part#: EXHDP0043CAT
Ships in 8 Business Days
Sale - Save 10% $ 749.99

This product was last offered at the strikethrough price on
09-29-2026

$ 674.99 USD
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Sale - Save 10%
$ 749.99

This product was last offered at the strikethrough price on
09-29-2026

$ 674.99 USD
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CTS Turbo High Flow-CATS are made to maximize exhaust flow for the highest power gains. Designed using the latest in CAD technology; this part is made to fit perfectly in place of the restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. In addition to unleashing the power and performance of your 3.0 Twin Turbo, CTS' High Flow-CATS will make your vehicle sound like it really should. When installed with factory exhaust, it produces a louder and deeper growl with a much more pronounced exhaust “crackle” on downshift. While up-shifting you will enjoy a confident “punch!” as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system. Product Details: Designed and tested on a real car in the real world Cast T304 stainless steel, TIG welded back-purged construction 200 Cell High Flow-CATS Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Fitment: 2019-2022 G01 BMW X3M 2019-2022 G01 BMW X3M Competition 2019-2022 G02 BMW X4M 2019-2022 G02 BMW X4M Competition To remove the CEL that will occur, proper stage 2 tuning software must be used.
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Milltek Sport - Corporate Logo
T#:597158
Part#: F5137
Ships in 3 Business Days
Sale - Save 11% $ 39.99

This product was last offered at the strikethrough price on
09-18-2026

$ 35.42 USD
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Sale - Save 11%
$ 39.99

This product was last offered at the strikethrough price on
09-18-2026

$ 35.42 USD
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CTS - Corporate Logo
T#:23053155
Part#: CTS-EXH-DP-0022-
Ships in 8 Business Days
Sale - Save 33% $ 399.99

This product was last offered at the strikethrough price on
09-29-2026

$ 269.99 USD
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Sale - Save 33%
$ 399.99

This product was last offered at the strikethrough price on
09-29-2026

$ 269.99 USD
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Enhance your BMW's performance with the CTS Turbo high-flow catalytic converter designed specifically for the BMW N55 (Pneumatic Wastegate) engine. This aftermarket part aims to optimize exhaust flow, delivering significant power gains without compromising performance or sound quality.

  • Precision-designed and real-world tested for optimal performance
  • Constructed from durable T304 stainless steel with hand TIG welding and back purging for reliability
  • Replaces the factory downpipe, reducing restrictions and unlocking greater power
  • Offers a sporty exhaust note, delivering a subdued sound during cruising without excessive drone
  • Requires proper tuning software like Bootmod3 for CEL removal; recommended for OFF-ROAD use only
  • Note: Catalytic converters damaged by "crackle tune" are not covered under warranty.
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Supersprint - Corporate Logo
T#:14551912
Part#: 789331
In Stock
Sale - Save 22% $ 458.99

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

$ 358.00 USD
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Sale - Save 22%
$ 458.99

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

$ 358.00 USD
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CTS - Corporate Logo
T#:27871827
Part#: CTSEXHDP0054CAT
Ships in 8 Business Days
Sale - Save 10% $ 429.99

This product was last offered at the strikethrough price on
09-29-2026

$ 386.99 USD
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Sale - Save 10%
$ 429.99

This product was last offered at the strikethrough price on
09-29-2026

$ 386.99 USD
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The CTS Turbo High-Flow Cat for the BMW BN26 is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential!

Precisely designed and tested on a real car in the real world T304 stainless steel, TIG welded back-purged construction Replaces restrictive factory downpipe with high-flow 200-cell catalytic converter Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.

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Milltek Sport - Corporate Logo
T#:590924
Part#: SSXM409
Ships on Oct 22, 2026
Sale - Save 10% $ 1,576.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,418.50 USD
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$ 1,576.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,418.50 USD
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Featuring a Milltek Sport Hi-Flow Sport Cat with 2.75" Large Bore Pipe, short adapter will also be needed to fit US stock midpipe
CTS - Corporate Logo
T#:4333556
Part#: EXHDP0042CAT
Ships in 8 Business Days
Sale - Save 10% $ 1,199.99

This product was last offered at the strikethrough price on
09-29-2026

$ 1,079.99 USD
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Sale - Save 10%
$ 1,199.99

This product was last offered at the strikethrough price on
09-29-2026

$ 1,079.99 USD
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CTS Turbo High-Flow Cats are made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts. Designed using the latest in CAD technology; this part is made to fit perfectly in place of the restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. In addition to unleashing the power and performance of your 4.4 Twin Turbo, CTS' High-Flow Cats will make your vehicle sound like it really should. When installed with factory exhaust it produces a louder and deeper growl with a much more pronounced exhaust “crackle” on downshift. While up-shifting you will enjoy a confident “punch!” as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system. Product Details: Includes 200 cell sport catalytic converter Designed and tested on a real car in the real world Cast T304 stainless steel, TIG welded back-purged construction Replaces restrictive factory catalytic converter Great power upgrade with uncompromising performance Incredible sporty exhaust sound, subtle when cruising No drone with factory exhaust Fitment: 2018-2021 F90 BMW M5 2018-2021 F90 BMW M5 Competition 2020-2021 F91/92/93 M8 To remove the CEL that will occur, proper stage 2 tuning software must be used.
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Milltek Sport - Corporate Logo
T#:584036
Part#: F5135
Ships on Oct 22, 2026
Sale - Save 10% $ 94.99

This product was last offered at the strikethrough price on
09-18-2026

$ 85.33 USD
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$ 94.99

This product was last offered at the strikethrough price on
09-18-2026

$ 85.33 USD
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Made in the UK for the MINI enthusiast, For fitting Milltek high flow catalytic to stock mid-pipe
Milltek Sport - Corporate Logo
T#:597146
Part#: F5136
Ships on Oct 22, 2026
Sale - Save 12% $ 38.99

This product was last offered at the strikethrough price on
09-18-2026

$ 34.33 USD
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Sale - Save 12%
$ 38.99

This product was last offered at the strikethrough price on
09-18-2026

$ 34.33 USD
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Milltek Sport - Corporate Logo
T#:597447
Part#: SSXM450
Ships on Oct 22, 2026
Sale - Save 10% $ 1,602.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,442.57 USD
Sale - Save 10%
$ 1,602.99

This product was last offered at the strikethrough price on
09-18-2026

$ 1,442.57 USD

Milltek Sport - Corporate Logo
T#:39059239
Part#: SSXBM1333
Ships on Oct 22, 2026
Sale - Save 10% $ 3,638.00

This product was last offered at the strikethrough price on
09-18-2026

$ 3,274.20 USD
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Sale - Save 10%
$ 3,638.00

This product was last offered at the strikethrough price on
09-18-2026

$ 3,274.20 USD
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Milltek Sport - Corporate Logo
T#:591403
Part#: SSXBM1037
Ships on Oct 22, 2026
Sale - Save 10% $ 2,876.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,588.54 USD
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$ 2,876.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,588.54 USD
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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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Milltek Sport - Corporate Logo
T#:591396
Part#: SSXBM1039
Ships on Oct 22, 2026
Sale - Save 10% $ 2,935.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,641.51 USD
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Sale - Save 10%
$ 2,935.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,641.51 USD
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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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Milltek Sport - Corporate Logo
T#:593554
Part#: SSXBM1030
Ships on Oct 22, 2026
Sale - Save 10% $ 3,596.99

This product was last offered at the strikethrough price on
09-18-2026

$ 3,236.64 USD
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Sale - Save 10%
$ 3,596.99

This product was last offered at the strikethrough price on
09-18-2026

$ 3,236.64 USD
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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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Hi-Flow Sports Catted Downpipes - F80/F82
Requires Milltek Catback Exhaust
Milltek Sport - Corporate Logo
T#:593561
Part#: SSXBM1127
Ships on Oct 22, 2026
Sale - Save 10% $ 2,584.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,325.65 USD
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Sale - Save 10%
$ 2,584.99

This product was last offered at the strikethrough price on
09-18-2026

$ 2,325.65 USD
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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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Milltek Sport - Corporate Logo
T#:591375
Part#: SSXBM1093
Ships on Oct 22, 2026
Sale - Save 10% $ 2,179.00

This product was last offered at the strikethrough price on
09-18-2026

$ 1,961.10 USD
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Sale - Save 10%
$ 2,179.00

This product was last offered at the strikethrough price on
09-18-2026

$ 1,961.10 USD
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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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Catalytic Converter Installation Kit - B58 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:27238750
Part#: 18328612537KT2
Ships in 3 Business Days
Sale - Save 6% $ 102.99

This product was last offered at the strikethrough price on
07-09-2026

$ 96.69 USD
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Sale - Save 6%
$ 102.99

This product was last offered at the strikethrough price on
07-09-2026

$ 96.69 USD
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Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.