XForce Performance Exhaust System for Audi S3 (01/2021 – on), Audi S3 (05/2014 – 2018)

3″ 304 Stainless Steel Varex valved Cat Back Exhaust System with Smartbox
Features
Unleash the full potential of your Audi 8Y or 8V S3 Sedan with the XFORCE VAREX SmartBox-equipped cat-back exhaust system. This system doesn’t just upgrade your exhaust—it redefines how you experience sound and control behind the wheel.Constructed from brushed 304 stainless steel, the system features 3” mandrel-bent piping, a hot dog resonator, and a redesigned VAREX valved rear muffler, giving you a bold, aggressive tone when open and a refined, near-stock sound when closed. It’s daily-driveable with the flexibility to turn heads when you want to.Paired with our VAREX SmartBox, you gain the most advanced exhaust control available. Choose from:
Matrix Mode: Automatically adjust valve position based on speed, RPM, or throttle input.
Manual Mode: Fine-tune valve position in real time via the XFORCE app or remote.
Geo Mode: Program valve behavior by location—quiet in your neighborhood, loud on your favorite backroad.
Factory Mode (with optional cable): Seamlessly link exhaust behavior to your Audi’s built-in drive mode settings.
Finished with bold quad 4” tips (available in brushed, black, or burnt blue), this system not only transforms your S3’s sound but also delivers a premium visual upgrade.System
**Features**
:
3” mandrel-bent 304 stainless steel construction
Drone canister tube for reduced cabin drone
Redesigned VAREX valved muffler for maximum sound range
Quad 4” double-wall tips
Bolt-on design with all necessary hardware included
Includes VAREX SmartBox for full app control
Drive mode integration harness included