Audi 4.0T Catless Downpipe - C7 S6/S7/RS7 & D4 A8/S8 - ARM Motorsports

The OEM 4.0T downpipes include large, restrictive catalysts that limit exhaust flow and reduce power output. Replacing your OEM downpipes with ARM 4.0T Downpipes eliminates these restrictions, allowing for improved exhaust flow and performance gains.

OEM downpipes also have a crossover design, forcing exhaust gases through long, convoluted pathways with multiple sharp turns. ARM 4.0T Downpipes streamline this process by maintaining a same-side design, significantly improving airflow, reducing turbo lag, and enhancing throttle response.

• Gain up to 37whp / 42wtq

• Faster Turbo Spool

• Improved Exhaust Note

• Fully Reversible

• Catted Version Available

Premium Construction

The ARM 4.0T Downpipes are constructed from SS304 stainless steel, ensuring exceptional durability and long-lasting performance for your Audi 4.0T.

• Collector Design: Features a robust 4.4" x 3" collector welded to an OEM-style 5-bolt flange, compatible with all 4.0T turbocharger upgrades.

• Flex Section: Built-in stainless steel flex sections absorb stress during aggressive driving, including hard acceleration, braking, and cornering.

• OEM Mounting Points: Designed to integrate seamlessly with OEM transmission mounting brackets for added security and stability.

• Flange Transition: Smooth transition to a 2.25" 3-bolt flange ensures compatibility with both OEM midpipes and ARM 4.0T Midpipes.

Enhanced Exhaust Sound

For enthusiasts looking to further amplify their exhaust tone, the ARM 4.0T Midpipes make an excellent pairing with the downpipes.

OEM midpipes include dual resonators to suppress sound, which may not appeal to performance-focused drivers. Upgrading to ARM Midpipes delivers a richer, more aggressive exhaust note. Installing these midpipes alongside the downpipes requires just an additional 10 minutes, making it a quick and easy enhancement.

Fitment

• 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

What’s Included

• 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

ARM Motorsports Lifetime Warranty

All ARM Motorsports products come with a Lifetime Warranty. This warranty covers defects in craftsmanship and fitment, ensuring peace of mind. If any issues arise, you are entitled to a replacement unit free of charge

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need proof of purchase.

To start a return, you can contact us at sales@palenonperformance.com. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at sales@palenonperformance.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, Burger Motorsports does not allow returns, custom products (such as special orders or personalized items), JB4 Tuners and air filters can not be returned. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on discounted items or gift cards.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. Certain circumstances will require a restocking fee of up to 25% at the discretion of Palenon Performance. (Examples of these circumstances include but are not limited to multiple failed delivery attempts, modified or damaged products and packaging, etc.) If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Handling

If the item is shipping from us direct, you will receive a tracking number within 1 business day. Most orders fulfilled at our warehouse will ship the same business day if ordered by 12pm MST. If the item is being drop shipped from the manufacturer, we cannot guarantee a tracking number within 1 business day. If an item is being drop shipped, we cannot guarantee the 24 hour (1 business day) processing time. A purchase of expedited shipping at checkout means that once item is ready to ship, it will ship using the upgraded shipping method. Some manufacturers require 3-5 days to process orders. Purchasing expedited shipping may speed up the processing time of your order, but we cannot make any guarantees in relation to faster processing time on the manufacturer’s end.

Cancellations

If you used a credit/debit card or PayPal to place an order and decide to cancel or return your order for any reason, a 5% merchant fee will be passed along to you (8% for Shop Pay installments). Some manufacturers can take up to 7 business days to ship out orders. If an item is out of stock we will reach out to you within 48 hours to confirm you would like to proceed with a preorder. If the item is listed as custom-built/ built to order within the description, or if the ETA or average lead time is visible on the product page at the time of ordering and you are cancelling inside of that ETA/lead time you will be charged the merchant fee. If the cancellation is outside of the time frame the merchant fee will not be charged to you for canceling.