Unitronic Performance Downpipes w/GESi Catalysts (21+ RS6/RS7)

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SKU: 124744

Product Details


Unitronic is happy to release their Performance Downpipes for the 2020+ C8 RS 6 and RS 7 equipped with the 4.0TFSI EA825 (DJPB) engine. These downpipes are a direct bolt-on upgrade designed to optimally eliminate unwanted restrictions in the factory downpipes, reduce turbo lag and enhance the exhaust note while utilizing a 6” 400cpsi ultra high output catalytic converter, designed in partnership with Unitronic, from our emissions partners at Global Emissions Systems Inc (GESi).

GESi’s GEN2 ultra-high output UHOX catalytic converters were designed in conjunction with Unitronic for several 2017+ Audi and Volkswagen® applications, rated at up to 1200HP by GESi. Paired with Unitronic Stage 2 Performance Software and other supporting bolt-ons, these Performance Downpipes help yield up to 819HP / 760LB-FT.

The large 6" catalytic converters provide exceptional flow and greatly enhance the thunderous sound of the turbocharged 4.0TFSI engine. The smooth post-cat stainless steel transitions lead into dual 4.5" T304 stainless steel tubing, terminating at the factory 3-bolt mid-pipe flanges to ensure a seamless direct bolt-on fitment.

One key development area for Unitronic Engineers was the catalytic converter on these Performance Downpipes. While working closely with GESi through several iterations of their G-Sport Emissions Systems Catalytic Converters over the years, our goal once again was to ensure this product would satisfy our compliance demands while fulfilling Unitronic's performance-related goals. The team quickly opted for dual GESi 6" UHOX converters for these Performance Downpipes, which met the requirements for the C8 4.0TFSI while being rated for a massive 1200HP.

To take full advantage of these all-new Performance Downpipes, Unitronic Stage 2 ECU Software is now available for the C8 RS 6 and RS 7. With testing and validations completed, power outputs are increased by up to +219HP / +166LB-FT with Unitronic Stage 2 93octane/98ron Performance Software for a maximum of 819HP / 760LB-FT. This software upgrade is entirely compatible with our UniCONNECT+ cable, empowering Clients to tune their vehicles directly through the OBD-2 port within minutes from the comfort of their homes or garage.

Sound Clips:

Product Features

• GESi 6” G-Sport Ultra High Output UHOX 400cpsi Catalytic Converters

• 6" to 4.5" post-cat transition with T304 Stainless Steel tubing

• TIG-welded construction

• OEM-style thermal isolation/heat shielding

• Factory catalyst placement for maximum efficiency

• Proper factory Oxygen Sensor placement maintained

• Direct bolt-on fitment

• Enhanced exhaust note

• Compatible with the factory cat-back exhaust system


Lifetime Warranty on Hardware & 15-day Satisfaction Guarantee on Performance Software

Unitronic Warranty Information

Fitment Guide

Does this fit my vehicle?

Fitment Guide
Start Year End Year Make Model Submodel Cyl Lit Fuel FuelDel ASP EngDesg Notes
2021 2022 Audi RS6 Avant V8 4.0 GAS FI T ALL  
2021 2022 Audi RS7 BASE V8 4.0 GAS FI T ALL  

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