XS-POWER AUDI B6 B7 S4 DOWNPIPES
2.5" T304 Stainless High Flow Downpipes • Audi S4 4.2L V8 Tiptronic Automatic
Upgrade the restrictive factory exhaust system on your Audi S4 with the XS-POWER B6/B7 S4 High Flow Downpipe System — engineered to improve exhaust flow, throttle response, horsepower, and overall V8 performance.
Constructed from premium T-304 stainless steel with smooth mandrel-bent 2.5" (64mm) tubing, these downpipes are designed to maximize exhaust efficiency while maintaining long-term durability under high heat and performance driving conditions.
The straight-through high-flow design replaces the restrictive factory catalytic converter section, helping reduce exhaust backpressure and improve airflow from the legendary Audi 4.2L V8 engine.
Featuring CNC machined flanges, TIG welded construction, and precision bolt-on fitment, these downpipes are designed to deliver both strength and reliable installation.
⚙️ FEATURES
- ✔ 2.5" (64mm) Mandrel Bent Tubing
- ✔ Premium T-304 Stainless Steel Construction
- ✔ CNC Machined Flanges For Strong Solid Support
- ✔ TIG Welded Construction For Strength & Durability
- ✔ Straight-Through High Flow Design
- ✔ Replaces Restrictive Catalytic Converter Section
- ✔ Improved Exhaust Flow & Reduced Backpressure
- ✔ Increased Horsepower & Throttle Response
- ✔ Estimated Gains Of 10-15 BHP
- ✔ Bolt-On Installation Design
- ✔ Gaskets & Clamps Included
APPLICATION
- ✔ 2004-2008 Audi S4 B6 4.2L V8
- ✔ 2004-2008 Audi S4 B7 4.2L V8
- ✔ 6-Speed Tiptronic Automatic Transmission ONLY
IMPORTANT FITMENT NOTE
These downpipes are designed specifically for Tiptronic Automatic Transmission models.
DOES NOT FIT 6-SPEED MANUAL TRANSMISSION MODELS.
PRODUCT SPECIFICATIONS
| Material | T-304 Stainless Steel |
| Pipe Diameter | 2.5" (64mm) |
| Construction | Mandrel Bent / TIG Welded |
| Flanges | CNC Machined |
| Design | Straight Through High Flow |
| Installation | Direct Bolt-On |
| Included | Gaskets & Clamps |
WHY UPGRADE YOUR B6/B7 S4 DOWNPIPES?
The factory Audi S4 exhaust system contains restrictive catalytic converter sections that limit exhaust flow and performance potential. The XS-POWER high-flow downpipe system helps the 4.2L V8 breathe more efficiently, improving exhaust scavenging, throttle response, and overall engine performance.
Perfect for:
- ? Audi S4 Performance Builds
- ? Exhaust System Upgrades
- ? Naturally Aspirated V8 Builds
- ? Performance Street Cars
- ? Aggressive Exhaust Sound
- ? Improved V8 Exhaust Flow
Explore more performance parts at:
XS-POWER.COM
SSAUTOCHROME.COM
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- FEATURES: 2.5" (64mm) pipe diameter Mandrel Bent T-304 Stainless Steel CNC machined flange for strong solid support TIG weld for strength and durability Replaces Catalytic Converter Straight-through design allows more air through to improve horsepower and overall performance Increases Horsepower by 10-15 BHP (approximately) Bolt-on design, easy installation Gaskets and Clamps are included Professional fitting recommended APPLICATION: 2004-2008 Audi S4 (B6/B7) 4.2L V8 6-Speed Tiptronic Automatic Transmission IMPORTANT: Does NOT fit models with 6-Speed Manual transmission
