Audi S4 Exhaust Systems

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Audi and cutting edge performance have long been synonymous, just as Borla’s exhaust systems are synonymous with innovations in sound and motorsports engineering. Upgrade your vehicle with the performance gains and the sports car sound you desire by installing a Borla Cat-Back Exhaust System on your Audi S4.

Like the hand crafted quality you have come to expect from your Audi, Borla designs and engineers our exhaust systems on a vehicle by vehicle basis, for optimal in-cabin sound while still providing deep tones throughout the RPM band. What better way to appreciate your Audi S4 Quattro than by installing a Borla T-304 austenitic stainless steel exhaust system and letting your engine reach new heights. Proven performance gains highlight each aspect of your vehicle’s acceleration and power.

With a million mile warranty, amazing sound and proven performance gains, a Borla exhaust system should be your first upgrade on any Audi S4.

2018-2020 B9 Audi S4 Exhaust Systems = Available Now!

Audi S3 with Borla Cat-Back Exhaust System
Borla® Audi S4 Applications
S4 (2)
Cat-Back Exhaust System
Sound Level:
Length: 5"
Engines: 3.0L Body: Sedan Drive: AWD
Pipe Diameter: 2.5", 1.75" Tip Size: 3.5" Exit: Dual Split Rear Exit

  • Fits S4 models with or without Sport Differential
  • System contains a Merge X-Pipe

Price: $2,794.99

Cat-Back Exhaust System
Sound Level:
Length: 4.63
Engines: 2.7L Body: Sedan Drive: AWD
Pipe Diameter: 3" Tip Size: 3.14" Exit: Dual Left Rear Exit

    Price: $1,120.99