C8 RS6 / RS7 Race Cat-Back Exhaust System
- Mfg Part #
- 044165LA07KT
- ECS Part #
- ES#4841927
- Brand
-
This product was last offered at the strikethrough price on
06-13-2026
Free Shipping
Product Details
Unleash your C8 RS6 / RS7 with our Race Cat-Back Exhaust System! Experience drastic increases in flow and performance with the loudest emissions-compliant exhaust on the market!
For this exhaust system, our goal was simple: amplify the exhilarating 4.0T exhaust note with a proper "straight pipe" cat-back exhaust system. To accomplish this goal, our engineers started by incorporating full 3" piping from downpipes to tips. We specifically designed this catback with flow in mind to ensure the exhaust would never be a restriction. Compared to the OEM 2.5" diameter exhaust piping, the 3" ECS Race Cat-Back offers a significant increase in exhaust flow and expedited exhaust gas expulsion. For exhaust construction, high-quality 304 Stainless Steel was used to ensure long-term corrosion resistance, durability, and weight reduction. Next, an optimized x-pipe was added to aid in exhaust scavenging. This x-pipe further improves the flow of this system and results in substantial horsepower and torque gains. Black chrome RS-style oval exhaust tips are included with the exhaust for OEM+ styling and precise fitment inside the factory diffuser.
FEATURES:
- Dual 3" (76mm) downpipes are designed to adapt directly to factory or aftermarket catalytic converters.
- 3" straight-through mid-pipes lead into an optimized x-pipe to increase exhaust scavenging.
- X-pipe splits to dual 3" (76mm) for the tailpipe section.
- The beautifully crafted final assembly is artfully TIG-welded and back-purged for superior durability and the finest appearance.
- Barbed exhaust hangers feature 360° hanger stoppers that are TIG-Welded in OE locations for precise location and factory-like fitment.
- Black Chrome RS-style oval exhaust tips feature a laser-etched ECS Tuning insignia for an OEM+ appearance.
- Strategically placed slip joints are joined with 304SS Accuseal clamps, providing acceptional adjustability and perfect fitment.
- Offers significant weight savings over the restrictive factory cat-back exhaust.
KIT CONTENTS:
- 3" (76mm) Downpipes
- Dual 3" (76mm) Non-Resonated Midpipe Assembly
- 3" (76mm) X-Pipe
- 3" (76mm) Tail-Pipes
- ECS Black Chrome RS-Style Oval Exhaust Tips
- M8 Locking Nut (6) - N91130802
- Exhaust Gasket (2) - 8W0253115D
- Valve Delete fixture to ensure no check engine light!
PRODUCT DEVELOPMENT:
Our C8 RS6 / RS7 Race Cat-Back Exhaust System was designed, engineered, tested, and quality inspected by our Research and Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.
INSTALLATION AND SUPPORT:
Need installation tips? We put together a full installation tutorial from start to finish, including detailed instructions on how to remove your OEM exhaust system! See our Installation PDF under the "INSTALLATION" Tab for more information.
- 4K0253181C
- 4K0253300K
- 4K0253350AE
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | C8 RS 6 | Quattro | 4.0T | Use vehicle selector to confirm fitment |
| Audi | C8 RS 7 | Quattro | 4.0T | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Locking Nut - Priced Each |
|
6 | YES | |
| Exhaust Gasket - Priced Each |
|
2 | YES | |
| M6 x 1.0mm 16mm long stainless steel button head flange screw |
|
4 | YES | |
| C8 RS6/RS7 X-Pipe Package |
|
1 | YES | |
| C8 RS6/RS7 Resonator Delete Package |
|
1 | YES | |
| RS-Style Oval Tips - Black Chrome |
|
1 | YES | |
| Valve Delete Fixture - Pair |
|
1 | YES | |
| C8 RS6/RS7 Downpipes Package |
|
1 | YES | |
| C8 RS6/RS7 Tailpipes Package |
|
1 | YES |
Installation
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Return Process
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Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
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Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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