Description
Overview
From the masters of S4 performance, AWE Tuning proudly presents the B9 S4 exhaust solution — engineered specifically for the 2018-2025 Audi S4 (3.0). This is the SwitchPath™ valved catback exhaust system, built for drivers who want complete control of their S4’s volume and tone at their fingertips. Signature AWE tone, real performance, and a level of everyday flexibility that makes this one of the most versatile ways to shop for exhaust upgrades on your S4.
The AWE SwitchPath™ Exhaust comes complete with non-resonated downpipes, a precision-engineered X-pipe mid-section, and two valved muffler sections. Those valves can be controlled via the SwitchPath™ Remote or through factory valve programming, giving you a genuine dual-personality car exhaust. Sneaking out in the morning? Keep the valve closed for a quiet, civilized departure. Ready to rumble? Open the valve and let them know you’re coming. This is the perfected B9 S4 soundtrack.
Key Benefits
Constructed from durable T304L stainless steel, this cat-back exhaust system is designed to survive years of hard driving while retaining its finish and integrity. The quad chrome silver tips each measure 4 inches in diameter, feature the AWE logo, and use double walling to ensure a mirror finish even under aggressive use. Every tip is individually adjustable, letting you set the exact depth into the bumper according to personal taste. Running 2.5-inch tubing, this performance exhaust delivers the AWE tone enthusiasts chase without requiring a tune.
- SwitchPath™ valved technology for full command of volume and tone
- Non-resonated downpipes plus a precision X-pipe mid-section
- Two valved muffler sections controllable via remote or factory valve programming
- T304L stainless steel construction with quad 4-inch chrome silver tips
- Double-walled, individually adjustable tips with the AWE logo
- No tune required, No CEL guarantee, and a Fit Guarantee
- 50 State Legal voluntary labeling
Controlling Your SwitchPath™
Pro tip from AWE: we recommend and encourage pairing the SwitchPath™ Exhaust with the SwitchPath™ Remote rather than relying solely on factory operation for the best SwitchPath™ experience. Note that you may notice a slight valve rattle upon cold start, as you would with many factory valved systems — this sound will go away within a few minutes as the system reaches temperature.
Fitment
This exhaust system kit is engineered for the 2018-2025 Audi S4 with the 3.0 engine. It’s a true cat-back exhaust setup that installs without a required tune, backed by AWE’s Fit Guarantee and No CEL guarantee for confident, bolt-on results. If you’ve been searching for the definitive B9 S4 exhaust system, the AWE SwitchPath™ delivers signature tone, quad-tip presence, and switchable character in one complete package.
