Description
Overview
The AWE Tuning Exhaust System Kit for the 2018–2025 Audi S4 Sedan (3.0) is a valved, cat-back performance exhaust built to give you total command over your car’s voice. Engineered in the SwitchPath™ edition, this exhaust system pairs on-demand volume control with AWE’s signature 3.0T tone, so you can slip out quietly in the morning and unleash a full rumble whenever you’re ready. If you’ve been searching to shop for exhaust hardware that upgrades both sound and presence, this catback exhaust delivers a purpose-built solution for the B9 S4.
Valve-Controlled SwitchPath™ Sound
The SwitchPath™ system is designed for drivers who want complete control of their S4’s volume and tone at their fingertips. Valved muffler sections let you keep things civil when the neighbors are sleeping, then open up to let everyone know you’re coming. Because the character is dialed in through the valve, this performance exhaust adapts to your mood, your drive, and your surroundings without compromise. For the best experience, AWE recommends pairing the SwitchPath™ Exhaust with the SwitchPath™ Remote for true at-your-fingertips operation.
Built to Last
Every exhaust pipe and section is constructed from durable T304L stainless steel, chosen for its strength and corrosion resistance. The 2.5-inch tubing is finished off with four striking Diamond Black tips measuring 4 inches in diameter, giving the rear of your S4 an aggressive, factory-plus look that stands out from the crowd. As a genuine cat-back exhaust system, it replaces the piping from the cats back for a clean, complete upgrade to your car exhaust.
Key Highlights
- SwitchPath™ valved edition for full command over volume and tone
- Cat-Back system type with 2.5-inch tubing and T304L Stainless Steel construction
- Four Diamond Black tips at 4-inch diameter for a bold rear-end statement
- 50 State Legal voluntary label and a No CEL Guarantee
- No tune required — install and drive
- Backed by AWE’s Fit Guarantee for confident, precise fitment
Fitment & Peace of Mind
This exhaust system kit is engineered specifically for the 2018–2025 Audi S4 Sedan equipped with the 3.0 engine. AWE’s Fit Guarantee means the components are designed to bolt on with precision, and the No CEL Guarantee ensures you won’t chase down phantom check-engine lights after installation. With no tune required and a 50 State Legal voluntary label, this is a straightforward path to a serious performance exhaust upgrade.
Whether you’re comparing a borla exhaust, corsa exhaust, magnaflow exhaust, or walker exhaust, the AWE Tuning SwitchPath™ catback exhaust brings valve-controlled versatility, premium stainless construction, and unmistakable Diamond Black styling to your S4. Choose the configuration that fits your driving style and take control of every mile.
