Valvetronic Designs Valved Sport Exhaust System - 2017-2024 Audi S4 & S5 (B9)
The EA839 3.0L V6 in the Audi S4 and S5 (B9) has more voice than the factory exhaust lets on. The Valvetronic Designs Valved Sport Exhaust System is a single, complete downpipe-back system built in full T304 stainless steel, so you are not stitching together a resonator from one vendor and an axle-back from another to get the sound you want.
Electronic valve control lets you switch between a bold, aggressive tone with sharp overrun crackles when the valves are open and a quiet, factory-like idle when they are closed. Paired with the OEM downpipe, there is no added cabin drone, so the car stays comfortable to live with every day.
Why Upgrade
- One-piece system design means you never have to mix a resonator from one vendor with an axle-back from another
- Electronic valve control switches between aggressive and refined sound instantly from a key fob remote
- Full mandrel-bent construction maximizes flow for improved throttle response
Construction
- Full T304 stainless steel tubing, mandrel-bent for maximum flow
- Precision TIG welds for strength and long-term durability
- 16.4 lbs lighter than the OEM exhaust system
Important Compatibility Information
This system is engineered for the S4 and S5's 3.0L V6 (EA839). Need the same treatment for an Audi B9 RS5? See the Valvetronic Designs Audi B9 RS5 Valved Sport Exhaust System.
Installation Notes
S4 sedan installations are a direct bolt-on. S5 coupe installations require a minor mid-section modification to shorten the pipe for proper fitment; if you have questions about your specific build before ordering, contact your BMP Tuning rep.
What's Included
- Full T304 stainless steel valved exhaust system
- Electronic exhaust valves with key fob remote control
- All clamps and hardware needed for installation
This system bolts up to your existing OEM or aftermarket downpipe; the downpipe itself is not included.
Product Specifications
- Fitment: 2017-2024 Audi S4 (B9) Sedan and S5 (B9) Coupe
- Material: Mandrel-bent T304 stainless steel
- Weight savings: 16.4 lbs lighter than OEM
| Finish | SKU | MPN |
|---|---|---|
| Carbon Fiber | V044 AUD.B9.S4.VSES.BR.RC | AUD.B9.S4.VSES.BR.RC |
| Black | V044 AUD.B9.S4.VSES.BR.BLK | AUD.B9.S4.VSES.BR.BLK |
| Chrome | V044 AUD.B9.S4.VSES.BR.CH | AUD.B9.S4.VSES.BR.CH |
| Burnt | V044 AUD.B9.S4.VSES.BR.BRT | AUD.B9.S4.VSES.BR.BRT |
| Forged Carbon Fiber | V044 AUD.B9.S4.VSES.BR.FC | AUD.B9.S4.VSES.BR.FC |
| Brushed | V044 AUD.B9.S4.VSES.BR.BRSH | AUD.B9.S4.VSES.BR.BRSH |
Frequently Asked Questions
Can I switch between a quiet and an aggressive exhaust note?
Yes. The electronic valve control opens or closes the valves instantly from the included key fob remote.
Will this add drone to the cabin?
No. Paired with the OEM downpipe, the system runs drone-free with the valves closed.
Is installation the same for S4 and S5?
No. S4 sedans are a direct bolt-on, while S5 coupes need a minor mid-section modification. Contact your BMP Tuning rep if you're unsure how that applies to your car.
Why choose a full system over a separate resonator and axle-back?
A one-piece design avoids the fitment and tone mismatches that can come from mixing components sourced from different vendors.
What should I do if the exhaust doesn't fit correctly when it arrives?
Contact your BMP Tuning rep before you install or heat-cycle the system so we can help resolve the issue.