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Exhaust› Exhaust Pipes, Systems and Components

Milltek

Particulate Filter-Back Exhaust System

Name: Particulate Filter-Back Exhaust System
Brand: Milltek
SKU: SSXAU899

$6,131.37

SKU: SSXAU899

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Non-Returnable Item

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Moderate — 2–4 hours

Overview

The Milltek Sport SSXAU899 is a particulate filter-back exhaust system designed for the Audi RSQ8 4.0 V8 Bi-Turbo with OPF/GPF equipped models from 2020 onwards. This system aims to compensate for the sound-reducing qualities of the particulate filter and enhance the exhaust sound aesthetic.

Manufactured in the UK from 304L "Aircraft" grade stainless steel, it features a 76.20mm pipe diameter and a non-resonated design for a sportier exhaust note. The system includes various pipes and silencer replacements, designed as a direct replacement for the OE system, with an estimated fitment time of 3 to 4 hours.

Show original supplier description

The Milltek Sport SSXAU899 is a high-performance, non-resonated cat-back exhaust system meticulously engineered for the Audi 4MN RSQ8 models equipped with OPF/GPF filters, from 2020 to the present. Constructed from premium 304L "Aircraft" grade stainless steel, known for its exceptional durability and corrosion resistance, this exhaust system is built to last. It features a 3.00" (76.20mm) pipe diameter, which facilitates improved exhaust flow compared to the stock system. The non-resonated design ensures a louder, more pronounced exhaust tone, while the availability of different tip styles allows for personalization. The kit includes all necessary components for a comprehensive replacement, such as flexi pipes, silencer replacement pipes, center sections, connecting pipes, a rear silencer assembly, valved outlet pipes, and outlet pipes. The estimated installation time is between 3 to 4 hours, including the removal of the original exhaust system. This is a performance-oriented product, not designated as a race product, and is not E-marked. This Milltek Sport exhaust system is a direct fit replacement for the 2020, 2021, 2022, 2023, and 2024 Audi RSQ8 models with the 4.0L V8 Bi-Turbo engine, specifically those equipped with OPF/GPF filters.

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
Part Number	SSXAU899
Category	Exhaust

Videos

Milltek Non Resonated cat-back - Audi RSQ8 700 + HP | Start-up | Revs | Fly-by

RS Sport Exhaust vs. Milltek Exhaust (Audi RSQ8)

Audi RSQ8 - Milltek Sport Turbo-Back Exhaust

Audi RSQ8 Milltek Exhaust VS. Audi RS6 Avant C7 Milltek Exhaust

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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

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