Product images and videos 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.

Sale

Exhaust› Exhaust Pipes, Systems and Components

Milltek

Large Bore Downpipe System

Name: Large Bore Downpipe System
Brand: Milltek
SKU: SSXAU223

$487.92 $473.28 Save $14.64

SKU: SSXAU223

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Milltek SSXAU223 is a large-bore downpipe system designed for the Audi B8 S5 4.2 V8 Coupe. Constructed from aerospace-grade type 304, non-magnetic stainless steel, this downpipe is built for durability and resistance to discolouration.

It features mandrel-bent pipework with enlarged bore diameters to optimize gas flow and enhance performance without sacrificing mid-range torque. Installation is estimated to take 2.00 to 3.00 hours.

Show original supplier description

The Milltek SSXAU223 is a large-bore downpipe system specifically engineered for the Audi B8 S5 4.2 V8 Coupe models from 2007 to 2011. This premium exhaust component is crafted from aerospace-grade type 304, non-magnetic stainless steel, ensuring exceptional longevity and resistance to corrosion and discoloration. The design incorporates mandrel-bent tubing with carefully enlarged bore diameters (60mm / 2.36 inches). This precise engineering optimizes exhaust gas flow, contributing to improved vehicle performance. The system aims to deliver a sporty and crisp exhaust note while meticulously avoiding unwanted NVH, drone, or cabin resonance, ensuring a refined driving experience. Milltek's commitment to quality is evident in the hand-finished construction, a hallmark of their UK-based manufacturing process. The use of high-grade stainless steel and advanced manufacturing techniques like mandrel bending means these downpipes are built to last, resisting the typical degradation seen in lesser exhaust components. Installation of the SSXAU223 is estimated to take between 2.00 to 3.00 hours. It is important to note that de-cat and sports cat components are intended for off-road or motorsport use only and will prevent the vehicle from passing an MOT test. Only EC type-approved components are legal for road use.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Milltek
Part Number	SSXAU223
Category	Exhaust

Videos

Audi S5 4.2 V8 Milltek non resonated exhaust

Audi S5 4.2 V8 milltek exhaust sound

Audi B8 S5 Milltek Non-Resonated Downpipes + OEM Exhaust

Audi S5 V8 4.2 Manual. Milltek exhaust, JHM Flywheel canyon drive

Sneak Peak Audi S5 4.2 FSI V8 Revo Technik Power and Milltek Sport Sound

Audi S5 2015 B8.5 - OEM vs Milltek non-res exhaust.. sounds bloomin' lovely

AUDI S5 Milltek exhaust!!

Audi S5 4.2L V8 [POV] Milltek Sound

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy