Audi A4 RS4 A5 RS5 Downpipe Typ B9 200 Zellen Katalysator

High‑Flow Stainless Steel Downpipe for Audi RS4 B9 & RS5 B9

Transform your RS4/RS5 B9 into a power machine with our fully 304 stainless steel High‑Flow downpipe. Featuring a 200‑cell sports metal catalytic converter and optimized flow paths, enjoy noticeably faster response, enhanced turbo thrill, and an unmistakably aggressive exhaust note.

Key Benefits at a Glance

• +20–25 HP Gain
  Through drastically reduced backpressure and optimized exhaust flow.
• 250 % Increased Flow
  Thanks to 76 mm pipe diameter and 200‑cell metal cat.
• Clear, Rich Exhaust Tone
  Deeper character at full load and pronounced turbo whistle on spool.
• Corrosion‑Free & Durable
  Constructed entirely from 304 stainless steel (SS304).
• Perfect Fitment
  Laser‑cut flanges, precision V‑bands, and factory‑style O₂ sensor placement.

Technical Specifications

• Material: 304 stainless steel, welded & polished
• Outer Diameter: 76 mm (3")
• Catalytic Converter: 200‑cell High‑Flow® sports metal cat (integrated)
• Sensor Ports: Factory‑style O₂ sensor locations
• Manufacturing: CNC laser‑cut, precision V‑band system
• Design: 3D scan‑based CAD for exact OEM fitment
• Sound: Aggressive, deep‑rich, no droning at idle
• Power Gain: approx. +20–25 HP (depends on tune & vehicle condition)
• Installation: Plug‑&‑Play on stock or aftermarket mid‑pipe
• Tuning: ECU remap strongly recommended

Compatible Models

• Audi A4 Avant & Sedan RS4 B9 – Model years from 2017
• Audi A5 Sportback & Coupe RS5 B9 – Model years from 2016

Note: Motorsport use only – not approved for road use, no TÜV certification.