Audi RS3 (2017-2021) 8V Sportsback MILLTEK 80mm Cat Back

Upgrade your RS3 Sportback with a high-flow 80 mm cat-back from Milltek. Enhanced tone, stainless build, bolt-on fitment for MQB facelift models.

Key Features

• 80 mm mandrel-bent stainless steel construction for optimal flow and durability. 

• Resonated or non-resonated versions available, letting you choose your level of exhaust volume. Titanium or burnt titanium tip finishes available to enhance visual appeal. 

• Direct bolt-on design, using OEM mounting points, ensures installation is straightforward. 

• EC / E-marked compliant (for the resonated version) for street legality in many regions. 

• Designed specifically for RS3 Sportback 8V MQB Facelift (including OPF/GPF variants) — tailor-made for this chassis.

Detailed Description

The Milltek Sport 80 mm Cat-Back Exhaust is an ideal upgrade for RS3 Sportback (8V MQB Facelift) owners who want a sharper sound, better flow, and premium look. It replaces the factory rear section with high-grade stainless steel piping and mufflers tuned to deliver a sportier acoustic profile—without undue drone or cabin resonance.

Choose between a resonated option for a more mellow tone or a non-resonated “race” variant for maximum exhaust aggression. The system is mandrel-bent throughout to maintain smooth transitions and reduce flow restrictions. Tailpipe finishes include titanium or burnt titanium, giving the rear end a bold, performance aesthetic.

Because Milltek crafts these to fit perfectly onto the MQB facelift RS3 platform, installation is clean and straightforward — it mounts using factory hangers and points. The resonated version carries E-marks for legal road use in many markets, but always verify local noise and emissions compliance before installing.

Technical Specifications

What’s Included

• Cat-back exhaust section (mufflers, piping, tailpipes)

• Exhaust tips per chosen finish

• Mounting hardware, clamps, gaskets

• Installation instructions & torque specs

• E-mark / certification documents (where applicable)

Benefits & Use Cases

• Deeper, sportier sound without sacrificing drivability

• Better exhaust flow helps reduce back pressure and may improve throttle response

• Visual upgrade: titanium / burnt tips stand out

• OEM-friendly install thanks to factory mounting design

• Street legal where allowed (with resonated, E-marked version)

Call to Action

Give your RS3 a performance makeover. Add the Milltek Sport 80 mm Cat-Back Exhaust for RS3 Sportback (MQB Facelift) to cart today and enjoy richer sound, better flow, and unmistakable style