SKU: 31486470342

ARM Motorsports Audi 4.0T Downpipes - S6 S7 RS7 A8 S8

$315.00 $350.00
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Description

ARM Motorsports Audi 4.0T Downpipes - S6 S7 RS7 A8 S8HIGHLIGHTS Gain up to 37whp 42wtq Faster Turbo Spool Improved Exhaust Note Fully Reversible PROFILE The ARM 4. 0T Downpipes immediately improve backpressure in your exhaust system, allowing your Audi 4. 0T turbos to spool faster and generate more power lower in the RPM range. The OEM 4. 0T downpipes incorporate two large coffee can size catalysts which reduce exhaust flow and power from your 4. 0T. By replacing your OEM 4. 0T downpipes with the ARM 4.

      •  

HIGHLIGHTS

• Gain up to 37whp / 42wtq
• Faster Turbo Spool 
• Improved Exhaust Note
• Fully Reversible

PROFILE

The ARM 4.0T Downpipes immediately improve backpressure in your exhaust system, allowing your Audi 4.0T turbos to spool faster and generate more power lower in the RPM range. 

The OEM 4.0T downpipes incorporate two large coffee can- size catalysts which reduce exhaust flow and power from your 4.0T.  By replacing your OEM 4.0T downpipes with the ARM 4.0T downpipes you will eliminate this restriction and free up exhaust flow.

Another drawback of the OEM downpipes is they are designed to cross over each other.  The driver side turbo connects to the passenger side midpipe, and vice versa on the opposite side.  This forces the exhaust gasses to take a long pathway with several sharp kinks and turns. The ARM 4.0T downpipes begin and end on the same side to improve airflow and shorten the travel-path of the exhaust gasses.  This results in faster turbo spool, more torque, and improved throttle response.  


CONSTRUCTION

 The ARM 4.0T Downpipes are built from SS304 stainless steel to ensure build strength and weld integrity for the life of your Audi 4.0T.  You will never need another set of downpipes again!



Starting at the turbos, the ARM 4.0T downpipes are made from one solid 4.4" x 3" collector for durability.  This collector is welded to an OEM-style 5-Bolt flange that will fit any turbocharger upgrade for the 4.0T platform.  






The ARM 4.0T Downpipes include a stainless steel flex section to relieve stress from the turbos during aggressive acceleration, cornering, and braking. 


The ARM 4.0T Downpipes utilize the OEM transmission mounting brackets to further secure them in place during aggressive driving.



The ARM 4.0T Downpipes transition to a 2.25" 3-Bolt flange to match up perfectly to the OEM Midpipes or the ARM 4.0T Midpipes.



NEXT-LEVEL EXHAUST HARMONICS

While the ARM 4.0T Downpipes enhance the sound of your exhaust dramatically, if you are looking to take your exhaust note to the next level, the ARM 4.0T Midpipes are an easy upgrade to further open up the incredible sound of your 4.0T. 



Audi designed the OEM midpipes with dual resonators to suppress the sound of your 4.0T.  While that may be desirable for some drivers, as an enthusiast you want to hear more of the amazing sound generated by the twin-turbo V8 under the bonnet.  The ARM 4.0T Midpipes do exactly that.  If you install the upgraded midpipes while installing the downpipes, it only adds approximately 10 minutes to the installation, making it the perfect time to install the midpipes.  


IN THE BOX

• 2x ARM 4.0T Downpipes
• 2x ARM Turbo Gaskets
• 2x ARM Midpipe Gaskets
• 10x Replacement Turbo Studs
• 10x Turbo Stud Nuts
• 6x Midpipe Bolts
• 6x Midpipe Nuts


FITMENT GUIDE


Make Chassis Model Engine
AUDI
 C7
 S6
 4.0T
AUDI
 C7
 S7 4.0T
AUDI
 C7.5 S6
 4.0T
AUDI C7.5 S7 4.0T
AUDI D4 A8 4.0T
AUDI D4 S8 4.0T
AUDI C7 RS7 4.0T
AUDI C7.5 RS7 4.0T
 

ARM MOTORSPORTS LIFETIME WARRANTY

Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
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: 31486470342

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4.6 ★★★★★
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Product Reviews
F
Fanofsam1
Lake Worth, US
★★★★★ 5
Tesla Phone Mount for Magsafe: Tesla Car Phone Holder for Tesla Model 3/Y
Okay so I received this Kaisepoch Tesla MagSafe phone mount, compatible with Model 3/Y, through Vine for review, and this is one of those Tesla accessories that’s all about convenience and clean in-car phone positioning. First impression—it’s a MagSafe-style magnetic phone holder designed specifically for Tesla Model 3 and Model Y interiors, so the idea is that it mounts neatly without cluttering the dash and keeps your phone visible for navigation or quick access. In general, Tesla MagSafe mounts like this are designed around either screen-edge or dash-mounted positioning depending on the generation of the vehicle, with magnetic alignment for one-hand docking and removal. What I like: MagSafe magnetic attachment makes it quick to dock and remove the phone Designed specifically for Tesla Model 3/Y interior fitment Keeps phone in a visible navigation-friendly position Cleaner setup compared to bulky universal mounts One-hand operation is convenient while driving Things to know: Fit can vary slightly depending on Tesla model year/interior generation; Magnetic strength depends heavily on your MagSafe case quality; Placement matters—some positions may affect screen visibility depending on preference; Like most Tesla mounts, long-term stability can depend on heat and surface conditions. Overall, this is a clean, simple MagSafe Tesla mount option that focuses on easy phone access and minimal clutter. If you want a straightforward mount for navigation and quick phone docking without overcomplicating the setup, this is a solid pick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
A
Amazon Customer
Waukegan, US
★★★★★ 5
Tesla Phone Mount (Model 3/Y/Juniper/Cybertruck)
This Tesla-specific phone mount is one of the cleanest and most functional accessories I’ve added to my vehicle. It installs neatly behind the touchscreen using the included positioning frame, so it doesn’t block any vents, airbags, or the driver’s view. Once mounted, it stays rock-solid and looks like it belongs there from the factory. The magnetic hold is impressively strong — 20 ultra-powerful magnets keep even a large phone locked in place through rough roads, sharp turns, and highway speeds with zero slipping. The 360° adjustable telescopic arm is smooth and stays exactly where you set it, whether in portrait for navigation or landscape for videos. When not in use, it folds away discreetly behind the screen. After two weeks of daily driving (including some bumpy back roads), the mount shows no signs of loosening, sagging, or vibration. The 3M adhesive has held perfectly through temperature swings, and the aluminum arm feels premium and sturdy. It works flawlessly with MagSafe phones and includes rings for non-MagSafe devices. Overall, this is a well-engineered solution that combines strong performance, clean aesthetics, and real usability. If you want a phone mount that feels integrated with your Tesla instead of an afterthought, this is an excellent choice. Very happy with the quality and design.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
J
JT C.
Waukegan, US
★★★★★ 4
Looks good, moves smoothly.
This is a pretty good holder. The magnets were strong and I didn't notice my phone sliding around. It also includes additional adhesive if you want to move it later on. It rotates and folds so its out of sight if unused. I would have preferred some other form of installation, like suction, but understand that doesnt always work right. If you use your phone often in the Tesla, this is a good option. I just think there are better options out there, but thats my preference. The material is nice and sturdy, nice metallic look, and bends/rotates smoothly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
S
Southern Bel
Natrona Heights, US
★★★★★ 5
Sleek and looks so good in the Tesla but doesn’t have a suction option
This is a nice phone mount for the Tesla with some pros and cons. Pros: It has a very strong magnetic connection so there’s no worry of your phone randomly hitting the floorboard. It’s sleek and minimalist looking and blends really nicely with the Tesla’s interior. Note that this is not a charger, just a mount. It seems to be well made of quality materials. This mount is also easily installed. Cons: the only way to mount this is with the included M3 adhesive, this is not a suction mount, so when you go to move it, you may have to deal with residue. This also limits you from being able to switch it from one side of the screen to the other (driver or passenger), if you so choose to do so. The other con is to move it from portrait mode to landscape mode you have to reach back behind the screen to loosen the mount, adjust it, then retighten. Personally it just feels like too many steps to change the viewing angle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
P
Prof Reviewer
Phoenix, US
★★★★★ 5
Sturdy and well built
This Tesla phone mount has a sleek minimalist design that blends nicely with the interior of the Model 3 and Model Y. The foldable hidden style keeps the dashboard looking clean, and the strong magnetic hold keeps the phone secure even during turns or bumps. The 360-degree adjustment also makes it easy to position the phone exactly where you want it. The mount feels sturdy and well-built, and the MagSafe compatibility makes attaching and removing the phone very convenient. It works well for navigation, music control, or hands-free calls without blocking too much of the screen or airflow. The compact design also helps it look more like a factory accessory rather than an aftermarket add-on. Overall, this is a stylish and practical Tesla accessory that combines strong magnetic support with a clean modern appearance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026

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