ECS Tuning C8 RS6 / RS7 Race Cat-Back Exhaust System

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.