Exhaust› Exhaust Pipes, Systems and Components

Milltek Sport

Resonated Cat-Back Exhaust System with Cerakote Black Oval Trims

$4,322.85

SKU: SSXAU750

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Milltek Sport SSXAU750 is a cat-back exhaust system designed for the Audi RS4 B9 2.9 V6 Turbo Avant from 2018-2022. This resonated system features Cerakote Black Oval Trims and is specifically for models without OPF/GPF filters. It is constructed from 304L "Aircraft" Grade stainless steel.
Show original supplier description
The Milltek Sport SSXAU750 is a resonated cat-back exhaust system meticulously designed as a direct replacement for the original system on the Audi RS4 B9 2.9 V6 Turbo Avant (Non OPF/GPF models) from 2018. It features a 70mm (2.76-inch) pipe diameter and is finished with distinctive Cerakote black oval trims, offering both enhanced aesthetics and performance. Constructed from aerospace-grade type 304, non-magnetic stainless steel, this system is built for longevity and superior resistance to discolouration, even under harsh conditions. Milltek's commitment to performance is evident in their use of mandrel bending, which guarantees constant radius bends for optimized gas flow. The bore diameters are carefully enlarged over stock specifications to maximize performance potential without compromising mid-range torque. Each Milltek exhaust system is the result of extensive acoustic development, aimed at delivering a sporty and crisp tone that avoids undesirable NVH, drone, or cabin resonance. This specific system is designated as EC Approved, indicating compliance with European noise and emissions standards. The product comes with a complete fitting kit, and installation can often be managed by a competent DIY mechanic, though professional installation is also an option.

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.

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Specifications

BrandMilltek Sport
Part NumberSSXAU750
CategoryExhaust

Videos

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

Audi B9 RS4/RS5 - Milltek Sport Cat-back Comparison
AUDI B9 RS4 GETS A MILLTEK SPORT RACE EXHAUST

AUDI B9 RS4 GETS A MILLTEK SPORT RACE EXHAUST
Audi B9 S4 Milltek Catback Exhaust Sound (vs. Stock)

Audi B9 S4 Milltek Catback Exhaust Sound (vs. Stock)
Audi RS4 Milltek Exhaust - Non Res Cat Back Exhaust System: The Sound Test

Audi RS4 Milltek Exhaust - Non Res Cat Back Exhaust System: The Sound Test
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Audi S4 B9 Milltek Decat Downpipes + Milltek Non-Res Cat-Back drive away
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Audi A4 B9 2.0 TFSI | Wydech Milltek Sport Cat-back Road+ exhaust | Wydechowe.pl
Audi RS4/RS5 B9 2.9 V6 TFSI - Milltek Sport Cat-back Non-Resonated (Valved)

Audi RS4/RS5 B9 2.9 V6 TFSI - Milltek Sport Cat-back Non-Resonated (Valved)
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Milltek CATBACK Exhaust installed on a Audi S4 B9
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Audi RS4 Avant B9 | Wydech Milltek Sport GPF-back Non-resonated Race exhaust | Wydechowe.pl

Audi RS4 Avant B9 | Wydech Milltek Sport GPF-back Non-resonated Race exhaust | Wydechowe.pl
Milltek Race on B9 RS5 Sportback

Milltek Race on B9 RS5 Sportback
Rs5 B9 (OPF)+Milltek Resonated(ECU Approved)

Rs5 B9 (OPF)+Milltek Resonated(ECU Approved)
Audi RS4 B9 MILLTEK EXHAUST Sound LOUD! Revs & ONBOARD by AutoTopNL

Audi RS4 B9 MILLTEK EXHAUST Sound LOUD! Revs & ONBOARD by AutoTopNL
𝙈𝙄𝙇𝙇𝙏𝙀𝙆 𝙎𝙋𝙊𝙍𝙏 - Audi RS4 2.9TT V6 (B9 OPF/GPF) (Catback "Louder"@MilltekSport )

𝙈𝙄𝙇𝙇𝙏𝙀𝙆 𝙎𝙋𝙊𝙍𝙏 - Audi RS4 2.9TT V6 (B9 OPF/GPF) (Catback "Louder"@MilltekSport )
Audi RS4 Avant B9 w/ Milltek Non Resonated Valved Exhaust

Audi RS4 Avant B9 w/ Milltek Non Resonated Valved Exhaust
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Audi RS4 B9 Vs Rs5 F5 2.9 bi-turbo da 450cv Exhaust Milltek Vs Capristo

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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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