SKU: 27094981541

Sports Series High Flow Catted Downpipe for 2025+ M5 S68 Engine

Sale price$1122.75 Regular price$1247.50
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Sports Series High Flow Catted Downpipe for 2025+ M5 S68 EngineIntroducing our new Sports Series High Flow Catted Downpipes for your twin turbo S68 engine! Fits 2025+ M5 (G90). Key Features: Made in the USA! Manufactured in house. Now available for the 2025+ BMW G90 M5 S68 Engines! High Flow 200 cell metallic catalytic converter Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Better throttle response and faster turbo spool up times. Mandrel Bent 3"

Introducing our new Sports Series High Flow Catted Downpipes for your twin turbo S68 engine!  Fits 2025+ M5 (G90).

Key Features:

  • Made in the USA!  Manufactured in house.
  • Now available for the 2025+ BMW G90 M5 S68 Engines!
  • High Flow 200 cell metallic catalytic converter 
  • Higher Max Horsepower Power Curve
  • Higher Initial Torque Curve.  Torque curve hits faster and higher and longer.
  • Better throttle response and faster turbo spool up times.
  • Mandrel Bent 3" piping.  Smooth transition to the exhaust system.
  • 100% Stainless Steel Construction
  • 100% TIG welded for better quality welds
  • Precision CNC machined turbocharger V-Band flange.
  • Mirror polish or brush finish
  • Available with high temperature black thermal coating to reduce underhood temperatures.
  • Retains factory slip on style connection.
  • Compatible with the factory or aftermarket exhaust systems.
  • Track tested durability.
  • Includes all hardware for complete installation.
  • Limited Lifetime Warranty.

Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars.  Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly.  The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction. It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction). By replacing the factory downpipe/catalytic converter with our Sports Series High Flow Metallic Catted Downpipe, more power is unleashed! 

We use a 200 cell metallic core for our Sports Series High Flow Catted Downpipes. By having less cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through it more easily. Thus, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic like the factory is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts.

The M5 (G90) has 2 primary catalytic converters and 2 secondary catalytic converters for a total of 4 catalytic converters.  Our Sports Series High Flow Metallic Catted Downpipe replaces the primary catalytic converter with our high flow metallic catalytic converter and deletes the secondary ones.

Our Sport Series High Flow Catted Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by our in-house fabricators and built in the USA.  The factory turbocharger turbine housing utilizes a 3.5" V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel.  Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods.  The O2 sensor is positioned at the factory location.  100% bolt on. 

Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system.  There are no compatibility issues whatsoever.  The downpipes will come by default with brushed finish.

OPTIONS

Ceramic Thermal Coating - The purpose of ceramic coating downpipes is to keep heat from the exhaust gases inside the downpipe from radiating out. This keeps underhood temperatures lower and less heat absorption by nearby parts/surfaces.  Another added benefit is that by keeping in heat (energy) in the exhaust gases inside the downpipe, exhaust flow velocities stay up, resulting in lower backpressure. The ceramic coating also adds additional corrosion resistance. We utilize the best ceramic coating possible. Our thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand the high levels of heat).

CAUTIONThis product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA.  In addition to vehicle use verification, a Vehicle Compliance Waiver needs to be signed.

THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHILES IN THE STATE OF CALIFORNIA. 

The item is for sale for international customers without restriction.

Please contact us at [email protected] or call us at (626) 334-6609

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27094981541

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4.4 ★★★★★
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Deby
Dallas, US
★★★★★ 5
buen producto
Size: 6 Panel, Color: Dark Coffee
Me encanta mi biombo , lo compre porque no me cabe las prendas de vesir que tengo en el colgadero y el closet no me es suficiente.Puse el colgadero detras del biombo y no se nota nada , me gusta mucho. Buen material y firme
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Reviewed in the United States on February 18, 2026
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Ishmail Hamed
Phoenix, US
★★★★★ 4
Nice product!
Size: 8 Panel, Color: Black
It looks great just like the picture and it's is good material. Could be a little more sturdy but overall I am pleased with the purchase.
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Reviewed in the United States on March 22, 2026
B
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Bunny W. Macon
San Leandro, US
★★★★★ 5
Light weight & Sturdy
Size: 6 Panel, Color: Dark Coffee
I am so pleased with them. My lanai gets morning sun and I am concerned about the UV rays fading the fabric of my furniture No more having to cover each piece at night. The screens are great. Thank YOU
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Reviewed in the United States on November 10, 2025
K
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Krishna
Phoenix, US
★★★★★ 5
Good
Size: 6 Panel, Color: Dark Coffee
Good, no complaints after several months of use
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Reviewed in the United States on January 15, 2026
J
Verified Purchase
Joseph C.
Carnegie, US
★★★★★ 3
Functional divider for windows privacy
Size: 8 Panel, Color: White, Size: 8 Panel, Color: White
I ordered both a six and eight panel version of the white divider. There was some confusion on the FedEx deliveries. The eight panel divider arrived at first, but Amazon showed both as delivered. I had to contact both the seller and Amazon to learn that the six panel divider was to arrive the following day by FedEx, which did occur. Both the boxes were a bit dirty and had some small punctures. This divider had a top area and bottom area set of plastic wrap tapes, both of which were loose or undone. (The eight panel divider was not so, and properly wrapped.) The top of thid divider looked a little dirty, but passable/cleanable. The seller should consider wrapping the entire product with bubble wrap to protect against potential delivery/shipping physical and water damage. (FedEx left the box by my outside door, which could have gotten potentially soaked in rain. One better be home to take delivery if the weather is bad.) This said, the divider was easy to set up, with all the metal hinges working. No assembly was required, just unboxing and standing up. The left side was a little uneven on the bottom with the first panel, but ok. In combination with my mini-blinds, it provides the additional layer of privacy I desired. I even don't notice outside headlights and tailights through the windows with my room lights on. Additionally, the divider is easy to adjust to allow access to my windows for opening and closing. So, no need for me to hang curtains and damage my drywall. Overall I give the product a C grade because of the lack of protection for the FedEx shipping. (As a former University told me years ago, "The A has been cheapened. In this class you will work for an A." And, I got a B. So, I am a bit jaded. :-)) Lastly, if one had cats and dogs, or even small children, the divider could be easy for them to topple over. I would not consider these dividerd in that case. My motto is, "Safety first."
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Reviewed in the United States on December 31, 2025

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