Have Questions?
-
Genuine Parts
Guaranteed Authentic
-
Modification Specialists
Call for assistance
-
Mod Now, Pay Later
Financing Available
-
Save On Delivery
Free shipping on most orders over $199
ARM Motorsports 4.0T Catted Downpipes - Audi S6/S7/RS7/A8/S8 2013-2018
Lease for as low as $/week
HIGHLIGHTS
• Faster Turbo Spool
• Improved Exhaust Note
PROFILE
The ARM 4.0T Catted 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 Catted 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 longer pathway with several sharp kinks and turns. The ARM 4.0T Catted 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 Catted 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!
The ARM 4.0T Catted Downpipes feature a 200 Cell Catalyst.
Starting at the turbos, the ARM 4.0T Catted 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 turbo upgrade for the 4.0T platform. 
The ARM 4.0T Catted Downpipes include a stainless steel flex section to relieve stress from the turbos during aggressive acceleration, cornering, and braking.
The ARM 4.0T Catted Downpipes utilize the OEM transmission mounting brackets to further secure them in place during aggressive driving.
The ARM 4.0T Catted 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 Catted 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 Turbo Gaskets
• 2x ARM Midpipe Gaskets
• 10x Replacement Turbo Studs
• 10x Turbo Stud Nuts
• 6x Midpipe Bolts
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 |
Note: Not available for sale or use in the state of California.
Returns may be accepted within 14 days of purchase pending Return Merchandise Authorization (RMA). No returns or cancellations on special order items. All returns will be charged a 20% restocking fee, no exceptions.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Item must be able to be resold as new.
Several types of goods are exempt from being returned. Hazardous materials, fluids, greases, chemicals, and clothing are not able to return.
Free shipping is available within the lower 48 states for most orders totaling $199 or more. A free shipping option will be available during checkout. This offer is for delivery address in the continental United States and excludes shipments going to Alaska, Hawaii, Military Boxes, and items that require freight shipping.
Processing Time
Patterson Performance stocks a large quantity of items at any given time. Some items may require drop shipping from one of our various distributors. In stock items will ship within 1-2 business days. If you're needing your product quickly, please contact us to verify product availability before placing your order. Orders requiring additional verification (security concerns, incorrect information, etc.) may need additional processing time. Estimated shipping dates are not guaranteed and are subject to change based on inventory levels and manufacturer lead times. Backordered items are shipped immediately once available.
Items ship daily, If the item you ordered is not in stock, a member of our team will contact you via email / phone.
Patterson Performance will only ship to an address that varies from your billing address if payment is made via Paypal or a financing partner.
Patterson Performance ships from multiple warehouses throughout the United States, and sometimes from manufacturers overseas.
You can simply contact us via email / telephone for a live inventory check
Find more information at www.P65Warnings.ca.gov.