Scorpion Downpipe Audi TT MK1 Quattro (8N)

Scorpion Downpipe - Audi TT MK1 Quattro (8N) 225 - 76mm

Upgrade your Audi TT MK1 Quattro 225 with a Scorpion downpipe, designed and manufactured in the UK by one of Europe's most respected performance exhaust brands. Scorpion downpipes are precision-engineered using CNC mandrel-bent T304 aerospace-grade stainless steel for maximum exhaust flow, durability, and corrosion resistance.

The 76mm / 3" large-bore design delivers significantly improved exhaust flow over the restrictive OEM downpipe, unlocking meaningful gains in turbo response, mid-range torque, and top-end power on the 1.8T 225 platform. Each downpipe is a true bolt-on upgrade and is fully compatible with both the OEM cat-back system and Scorpion's matching cat-back range.

This listing covers the Audi TT MK1 Quattro 225 (chassis 8N), 1.8T BAM/BFV engine, 1999 to 2005 model years. Two variants are available — select the configuration best suited to your build using the options on this page.

Variants Available

• Sports Cat Downpipe (System Code SAUX075) — Replaces the restrictive OEM catalyst with a high-flow sports catalyst. Delivers stronger flow and power versus OEM while retaining catalytic conversion. Suited to road and track use where catalyst retention is required.
• De-Cat Downpipe (System Code SAUX076) — Catalyst-delete design for maximum exhaust flow and the largest power gains. For closed-circuit and motorsport use only. Not road-legal in jurisdictions that require a functioning catalytic converter.

Important: Both variants alter or remove a factory emissions control device. Please confirm compliance with your local emissions and roadworthy regulations before fitting. The De-Cat variant is intended for off-road and motorsport use only.

Key Features

• 76mm / 3" large-bore CNC mandrel-bent design
• T304 aerospace-grade stainless steel construction
• Direct-fit replacement for the OEM downpipe
• Compatible with OEM cat-back and Scorpion cat-back systems
• Reduced weight versus the OEM downpipe assembly
• Designed and manufactured in the UK by Scorpion Exhausts

Sports Cat Kit Contents

• 1 x Scorpion turbo downpipe (Part 691AU)
• 1 x Scorpion front pipe with high-flow sports catalyst (Part 688AU)
• 1 x Fitting kit (Part 280FK)

Specifications

• Pipe Diameter: 76mm / 3"
• Material: T304 stainless steel
• Fits To: OEM cat-back or Scorpion cat-back
• Country of Manufacture: United Kingdom

Vehicle compatibility, OEM fitment, and configuration notes are provided in the tabs above. Please ensure your vehicle's year, engine code, and existing exhaust configuration are confirmed before ordering.

Not sure which downpipe suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.