Unitronic Cat-Back Exhaust System - Audi / 8Y S3

This valved, Unitronic Cat-Back Exhaust System for the 8Y S3 equipped with the 2.0 TSI EA888 EVO4 engine features 3-inch T304 Stainless Steel mandrel bent tubing, high density, high temperature fiberglass wool packed muffler, multiple exhaust tip options and high quality v-band fasteners with T316 Stainless Steel flanges. These attributes combined with extensive R&D testing, help ensure perfect fitment and maximum performance, while maintaining a comfortable and unobtrusive exhaust tone inside the cabin.


This specific assembly includes 4'' Round Chrome Tips by default which can be replaced by 4" Round Black PVD tips (extra) as needed.

• Valved Exhaust System:
  Retains OEM valve position and functionality.
• 3-inch T304 Stainless Steel Tubing:
  Quality rust-free material that will outlast your vehicle.
• T316 Stainless Steel V-Band Flanges:
  Durable, rustproof and cnc machined.
• Direct Bolt-On Fitment:
  Uses all factory exhaust hangers which do not require modifications or adjustments.
• TIG Welded Construction:
  Professionally hand welded to ensure longevity and leak proof resistance.
• Unique V-Band Fastening System Featuring Clampco® Clamps:
  Maintain a perfect alignment while insuring a leakproof connection every time. Fully reusable and quick to install.
• Straight-Through, Free Flowing Muffler Design:
  Optimal performance achieved by removing restriction and reducing back pressure.
• Universal Fitment:
  Comes with an OEM sized reducer for a direct bolt-on fitment with the factory exhaust. Optional 3” adapter available for most aftermarket exhaust systems.
• Sound Reflection Chamber Technology:
  Sound reflection chamber used to cancel unwanted sound frequency and ensure a deep tone.
• Sound Absorption Technology:
  Perforated chamber packed with High quality and durable high temperature fiberglass wool. Assures a deep tone and unwanted frequency absorption.
• Chrome 4-inch Slash Cut Round Tips:
  Mirror polished tips engraved with the Unitronic logo.
• Optional Black 4-inch Slash Cut Round Exhaust Tips:
  Also engraved with the Unitronic logo, these optional tips are easy to swap with their slip on design.

• Unitronic 3" Mid-Pipe w/ Resonator
• Unitronic 3" Rear Section w/ Muffler and Valves
• Unitronic 4" Round Chrome Tips w/ Engraved Logos
• Unitronic 3" V-Band Exhaust Clamps
• Unitronic 3" V-Band Sealing Rings
• Unitronic 3" V-Band Adapter
• All Necessary Installation Hardware

• Stage 1
• Stage 1+
• Stage 2

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