Take your Audi S6, RS6, S7, or RS7 (C7) to the next level with the Untd. Performance 3″ Catless Downpipe + Mid-Pipe w/ Heat Shield. This full turbo-back flow upgrade is built for maximum performance, combining a high-flow catless downpipe and matching mid-pipe section in one seamless system. Designed for the 4.0T twin-turbo V8, this combo eliminates restrictive factory components, enhances throttle response, and transforms your exhaust note—all while integrated thermal shielding keeps engine bay temps under control.

Key Features:

Full 3” Catless Downpipe + Mid-Pipe System

This system removes the factory catalytic converters and restrictive mid-section, replacing them with a full 3-inch, mandrel-bent stainless steel setup from turbo to rear sections. The result is massively improved exhaust flow, minimal backpressure, and optimized turbocharger efficiency.

Integrated Heat Shielding

High-temperature shielding is strategically built into the system to protect surrounding engine bay components, reduce heat soak, and preserve performance under aggressive driving. Whether on the street or at the track, the shielding helps maintain cooler and more consistent under-hood temps.

Maximum Power Gains

With the full factory restrictions removed, the turbochargers spool faster, torque delivery is immediate, and top-end horsepower sees a substantial increase. This is a performance upgrade you can feel across the entire RPM range—perfect for tuned or heavily modified builds.

Raw, Aggressive Sound

The full 3″ catless design paired with an upgraded mid-pipe unleashes a deeper, louder, and more dynamic exhaust note. Turbo spool, pops, and crackles are amplified for a truly motorsport-inspired sound that transforms your driving experience.

High-Grade Construction

Crafted from premium 304 stainless steel, this system is TIG-welded for strength and built to withstand high heat and pressure. Precision CNC-machined flanges ensure leak-free connections and perfect fitment. Designed for durability and built for abuse.

Direct Bolt-On Installation

Designed to integrate flawlessly with your C7’s factory turbo and exhaust layout, this downpipe and mid-pipe system features a bolt-on design with no cutting or welding required. Installation is straightforward, with all necessary hardware included.

Purpose-Built for Performance

Whether you’re prepping for the track, building a high-boost street machine, or maximizing your tune, this setup delivers uncompromised flow and reliability. It’s emissions-delete and track-focused, perfect for off-road use where emissions compliance is not required.

Compatibility:

Audi S6 (C7) 4.0T Twin-Turbo V8
Audi RS6 (C7) 4.0T Twin-Turbo V8
Audi S7 (C7) 4.0T Twin-Turbo V8
Audi RS7 (C7) 4.0T Twin-Turbo V8

For drivers chasing full-system performance, the Untd. Performance 3″ Catless Downpipe + Mid-Pipe w/ Heat Shield is the ultimate exhaust upgrade. From faster spool and brutal power gains to a bold, aggressive exhaust note—this is the full-performance solution your 4.0T V8 was made for.

⚠️ Note: For off-road and track use only. Not emissions-compliant in all regions. Please confirm local laws before installation.

ECU PROGRAMMATION WOULD BE REQUIRED FOR OPTIMAL PERFORMANCE & REMOVAL OF CHECK ENGINE LIGHT

Mid-Pipe

Untd. Performance 3″ Catless Downpipe + Mid-Pipe W/ Shield – Audi S6/RS6 – S7/RS7 C7 4.0T

Untd. Performance Mid-Pipe – Audi RS3 8V / TTRS 8S 2017+ 2.5 Turbo