Exhaust› Catalytic Converters

Milltek

Large Bore Downpipe w/ High-Flow Cat

$1,837.19

SKU: SSXVW673

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Milltek Large Bore Downpipe is a direct-fit turbo-back exhaust component for the VW Golf MK8 R and Audi S3 8Y. It features a 3-inch (76.2 mm) mandrel-bent main pipe and a 200 CPSI high-flow catalytic converter. This T304L stainless steel system is designed to optimize exhaust scavenging and reduce backpressure.
Show original supplier description
The Milltek Large Bore Downpipe with integrated Hi-Flow Sports Cat is a direct-fit turbo-back component engineered for the VW Golf MK8 R and Audi S3 8Y (EA888 Gen4 engines). This system is constructed from T304L stainless steel, known for its durability and resistance to thermal stress and corrosion. The downpipe features a 3-inch (76.2 mm) mandrel-bent main pipe and a 200 CPSI high-flow catalytic converter from HJS. This design optimizes exhaust scavenging to reduce backpressure and unlock performance gains. The CNC-formed construction ensures precise fitment, utilizing OEM hangers and mounting points for a no-modification installation. It is compatible with both OEM cat-back exhausts and Milltek Signature Series systems. Milltek has designed this downpipe to eliminate factory restrictions and deliver dyno-proven performance gains. The company emphasizes its 40-year heritage in exhaust engineering, with all components developed in-house and tested to performance standards. This downpipe aims to provide measurable efficiency without compromising durability or daily-driver compliance.

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

BrandMilltek
Part NumberSSXVW673
CategoryExhaust

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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.

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