Find Parts That Fit Your Vehicle

CTS 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!
Sort By:

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
Free Shipping
Sale - Save 5%
$ 379.99

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

$ 359.99 USD
Free Shipping

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.

Show More Show Less
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
Free Shipping
Sale - Save 10%
$ 799.00

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

$ 719.99 USD
Free Shipping
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.
Show More Show Less
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
Free Shipping
Sale - Save 10%
$ 749.99

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

$ 674.99 USD
Free Shipping
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.
Show More Show Less

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
Free Shipping
Sale - Save 33%
$ 399.99

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

$ 269.99 USD
Free Shipping

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.
Show More Show Less

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
Free Shipping
Sale - Save 10%
$ 429.99

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

$ 386.99 USD
Free Shipping

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.

Show More Show Less
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
Free Shipping
Sale - Save 10%
$ 1,199.99

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

$ 1,079.99 USD
Free Shipping
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.
Show More Show Less

Select Vehicle

Category

  • Downpipes

Price

$
$

Special Offers