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Exhaust› Exhaust Pipes, Systems and Components

Milltek Sport

Cat-Back Exhaust System

Name: Cat-Back Exhaust System
Brand: Milltek Sport
SKU: SSXAU612

$2,489.00 $2,147.42 Save $341.58

SKU: SSXAU612

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$100 Minimum Order

Non-Returnable Item

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Moderate — 2–4 hours

Overview

The Milltek Sport SSXAU612 is a cat-back exhaust system designed as a direct replacement for the original system. It is available in configurations to allow owners to choose their desired exhaust volume and tone. The system is constructed from 304L "Aircraft" Grade stainless steel, ensuring durability in harsh conditions.

Show original supplier description

The Milltek Sport Road+ Cat-Back Exhaust System (SSXAU612) is designed to enhance the sound and aesthetics of your Audi's exhaust. As a direct replacement for the factory system, it allows for customizable volume and a more aggressive tone. This "Road+" system is semi-resonated, offering a balance between enhanced sound and manageable cabin noise. The system includes polished GT-100 exhaust tips and is designed for easy integration with the existing exhaust setup. The construction utilizes robust materials to ensure longevity and a premium finish. This Milltek Sport cat-back exhaust system is specifically designed for the Audi B9 A4 Quattro 2.0T models. Fitment is confirmed for Saloon and Avant body styles from 2016-2020. It is important to note that this system is intended for models without OPF/GPF and without brace bars. It includes a fitting kit for installation.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Milltek Sport
Part Number	SSXAU612
Category	Exhaust

Videos

Audi B9 RS4/RS5 - Milltek Sport Cat-back Comparison

Milltek CATBACK Exhaust installed on a Audi S4 B9

AUDI B9 RS4 GETS A MILLTEK SPORT RACE EXHAUST

Audi S4 B9 Milltek Decat Downpipes + Milltek Non-Res Cat-Back drive away

2018 Audi S4 B9 Milltek Sport Cat-Back Exhaust

Audi B9 S4 S5 with Milltek Sport Cat Replacement Pipe with OEM exhaust inside the cabin

Audi A4 B9 2.0 TFSI | Wydech Milltek Sport Cat-back Road+ exhaust | Wydechowe.pl

Audi A4/A5 B9/5F Sportback 2.0TFSI | Wydech Milltek Cat-back Non-Resonated Exhaust | Wydechowe.pl

Audi B9 S4 Milltek Catback Exhaust Sound (vs. Stock)

B8 A4 Milltek Quadtip exhaust

Milltek Resonated Exhaust B5 A4 1.8TQM

Audi B9 S4 S5 with Milltek Sport Cat Replacement Pipe with OEM exhaust drive by

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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