Audi S3 Sedan Cat-Back Exhaust Kit APR


Special order only

Personalize your vehicle's looks, sound and performance with this beautiful 3" T304 stainless-steel catback exhaust system.

Fitting note:

This system is designed for the sedan model.

APR Exhaust - Catback System - S3 (8V)

The APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished mufflers smooth the exhaust note to a deep growl, without adding restrictions, while our Helmholtz resonator reduces unwanted frequencies. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. A cast 3" to quad 2.5" rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the system, while looking tidy from under the rear bumper. Our cast valve housings enable the vehicle to be fitted with the factory electronic valve actuators, retaining OEM valve operation.  Finally, removable 4" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle.


  • T304 stainless-steel construction
  • Argon-back-purged TIG welding throughout
  • Single 3" to quad 2.5" mandrel-bent brushed tubing
  • Ultra-smooth cast 3" to quad 2.5" splitter
  • Brushed-finished straight-through sound-absorption mufflers and Helmholtz frequency reducing resonator
  • Polished 4" slash-cut exhaust tips (removable)
  • Cast valve housings and brackets for OEM electronic actuators
  • Rugged and precise mounting brackets
  • OEM style slip clamps and Torca AccuSeal T304 tip clamps
  • Direct bolt-on fit
  • Low-profile design, suitable for lowered vehicles
  • Larger diameter piping compared to stock
  • Larger diameter tips compared to stock
  • No increase in weight compared to stock
  • In-house design with world-class manufacturing and quality control
  • Easy to install


Bending Mandrel
Brackets Precise
Brand APR
Clamp Style Slip Clamp
Emission Code 5
Exit Tube Diameter (in) 2.5
Material T304 Stainless Steel
Muffler Finish Brushed
Muffler Style Sound Absorption, Helmholtz
Product Type Exhaust Catback System
Splitter Cast
Tip Count 4
Tip Diameter (in) 4
Tip Finish Polished Silver
Tip Style Single Wall
Tips Removable Yes
Tube Connection Butt Joint
Tube Diameter (in) 3
Tube Finish Brushed
Valve Actuation OEM
Valves Yes
Welding TIG
Part Number CBK0003
More Information
OEM Part Number CBK0003
UPC 810009930723
Brand APR
Condition Brand new
Country of Manufacture United States
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You're reviewing:Audi S3 Sedan Cat-Back Exhaust Kit APR

This Fits:

Make Model Year


This system is designed for the sedan model.


WARNING: This item requires professional installation to protect the warranty.
NOTE: Euro Car Electronics offers Installation Australia wide. Call 07 5479 5555 or find installer.
Audi S3 Sedan Cat-Back Exhaust Kit APR