Unitronic Downpipes for 4.0TFSI




Constructed of 2.5" T304 stainless steel mandrel bent tubing T316 stainless steel flanges a corrugated stainless steel flex section and TIG welded fabrication this downpipe is built to outlast and outperform the competition. All Unitronic downpipes come equipped with a 200-cell high flow metallic catalytic converter and all transitions are flow-matched to allow for maximum performance and airflow. To finish it off an OEM-inspired catalytic converter heat-shield protects against unwanted heat radiating in the exhaust tunnel. Every Unitronic Exhaust System comes with a brushed matte finish for an elegant appearance that will last a lifetime.


  • 2.5-inch T304 Stainless Steel Mandrel Bent Tubing: Quality Material that will not rust and will outlast your vehicle.
  • T316 Stainless Steel Flanges: Durable rust proof and laser cut.
  • Direct Bolt-On Fitment with OEM Mounting Locations: Use all factory mounting location on the transmission like the OEM part.
  • Factory Catalyst Position: Assure maximum efficiency of the catalytic converter in line with OEM catalytic converter warm up strategy.
  • 200-Cell Metallic Matrix High-Flow Catalyst: Highly durable Matrix allowing minimal power loss while assuring maximum efficiency and flow.
  • OEM-Inspired Catalytic Converter Heat Shield: Help to reduce radiant heat in the engine bay.
  • OEM Oxygen Sensor Placement: No need for O2 sensor extension or modification of the wiring harness.
  • TIG Welded Construction: Professionally hand welded to ensure longevity resistance and leak proof.


  • Unitronic 2.5" Downpipes with Catalytic Converters
  • All Necessary Hardware Included


 Make Model Years Engine
Audi A8 2013-2016 4.0 TFSI
Audi RS6 C7 2012-2016 4.0 TFSI
Audi RS7 C7 2013-2015 4.0 TFSI
Audi RS6 C7.5 2016 4.0 TFSI
Audi RS7 C7.5 2016-2018 4.0 TFSI
Audi S6 C7 2012-2018 4.0 TFSI
Audi S7 C7 2012-2018 4.0 TFSI
Audi S8 2012-2016 4.0 TFSI