AUDI S4 B5 2.7T COMPLETE TURBO-BACK EXHAUST SYSTEM
TWIN-2 DUAL MUFFLER CATBACK + TRUE 3 INCH STAINLESS STEEL DOWNPIPES
XS-POWER Audi S4 B5 2.7 Twin Turbo Exhaust Upgrade
Transform your Audi S4 B5 2.7T twin-turbo exhaust system with the XS-POWER Twin-2 stainless steel turbo-back exhaust package. This performance exhaust combines true 3-inch stainless steel turbo downpipes with a twin 2.5-inch catback system, engineered for performance-oriented Audi 2.7-liter V6 biturbo applications.
Designed for enthusiasts upgrading their factory turbocharged S4 or assembling a modified Stage 3 performance build, this complete exhaust package brings together mandrel-bent stainless steel tubing, TIG-welded construction, braided flex sections, dual mufflers, and mirror-polished twin 76mm exhaust tips.
The XS-POWER Twin-2 configuration uses a mid muffler and rear muffler to provide a performance-oriented exhaust system with a more controlled sound profile than an unmuffled exhaust arrangement.
Whether you are searching for an Audi S4 B5 exhaust upgrade, a 2.7T turbo-back exhaust, stainless steel S4 downpipes, or a complete twin-turbo V6 performance exhaust package, XS-POWER delivers an integrated solution for your project.
Complete Exhaust System - Key Specifications
Twin-2 Dual Muffler Catback Exhaust
True Twin 2.5-Inch Exhaust Piping
The Twin-2 catback features true dual 2.5-inch exhaust piping. This dual-pipe layout provides a performance-focused exhaust flow path for the Audi 2.7T twin-turbo platform.
Mid and Rear Muffler Configuration
The Twin-2 system includes a mid muffler and a rear muffler, balancing the performance exhaust character of the 2.7T engine with additional sound attenuation.
Mirror-Polished 76mm Exhaust Tips
Twin mirror-polished 76mm exhaust tips provide a clean, performance-inspired appearance at the rear of the Audi S4.
TIG-Welded T304 Stainless Steel
High-quality stainless steel tubing and TIG-welded construction provide durability and corrosion resistance for demanding performance exhaust applications.
OEM-Style Sleeve Clamp Connections
Designed with OEM-style sleeve clamp connections to simplify assembly with compatible exhaust components. Fitment and alignment should be checked during installation.
Included 3-Inch Stainless Steel Turbo Downpipes
This package includes stainless steel turbo downpipes with true 3-inch mandrel-bent tubing and braided flex sections for use in the specified Audi S4 B5 2.7T turbo-back exhaust configuration.
- True 3-inch downpipe tubing
- T304 stainless steel construction
- TIG-welded joints
- Mandrel-bent exhaust tubing
- Braided flex sections
- Designed for integration with the included Twin-2 catback system
Braided flex sections allow limited movement within the exhaust assembly and help accommodate normal engine and exhaust movement when properly installed.
Confirm downpipe inlet flange design, turbocharger configuration, transmission clearance, and vehicle specifications before purchase. Aftermarket turbocharger systems may require fabrication or alternative downpipe connections.
Complete Technical Specifications
| Specification | Product Details |
|---|---|
| Brand | XS-POWER |
| Vehicle Platform | Audi S4 B5 |
| Engine | 2.7L V6 Twin Turbo / 2.7T |
| System Type | Complete Turbo-Back Exhaust |
| Catback Style | Twin-2 Dual Muffler |
| Downpipe Diameter | 3 Inches |
| Catback Diameter | Twin 2.5 Inches |
| Material | T304 Stainless Steel |
| Tubing | Mandrel Bent |
| Welding | TIG Welded |
| Muffler Configuration | Mid Muffler + Rear Muffler |
| Exhaust Tips | Twin 76mm Mirror Polished |
| Downpipe Flex Sections | Braided Flex |
| Connections | OEM-Style Sleeve Clamps |
| Installation Hardware | Included |
| Condition | Brand New |
Audi S4 B5 2.7T Fitment and Applications
This XS-POWER exhaust package is intended for the Audi S4 B5 2.7-liter V6 biturbo platform. It is suitable for evaluation on factory-style and modified turbocharger setups where the downpipe flanges, exhaust mounting points, and vehicle clearances are compatible.
- Audi S4 B5 2.7T twin-turbo performance builds
- Factory-style turbocharger configurations with compatible downpipe connections
- Modified Audi 2.7T exhaust systems
- Stage 2 and Stage 3 performance projects with compatible exhaust hardware
- Custom Audi 2.7T turbo-back exhaust upgrades
Vehicle market, model year, transmission, turbocharger type, catalyst arrangement, and existing aftermarket components can affect installation. Confirm all mounting interfaces before ordering. Fitment for other 2.7T models, including A6 and allroad applications, is not established by this listing.
Engineered for Audi 2.7T Performance Builds
The Audi 2.7T twin-turbo engine is a popular foundation for performance upgrades. A properly matched exhaust system can help reduce unwanted exhaust restriction and support the airflow requirements of upgraded turbocharger combinations.
The XS-POWER turbo-back system combines larger-diameter downpipes with true dual 2.5-inch catback piping for enthusiasts seeking a complete exhaust upgrade rather than replacing individual exhaust sections.
This exhaust package is intended for builds ranging from factory-style turbo setups to properly configured higher-output performance projects.
Actual horsepower, torque, spool response, exhaust sound, and backpressure results depend on turbocharger selection, engine tuning, catalyst configuration, and other modifications. No specific power gain is guaranteed.
Complete Package Includes
- XS-POWER Twin-2 dual-muffler catback exhaust assembly
- Stainless steel 3-inch turbo downpipes with braided flex sections
- Mid muffler and rear muffler as part of the Twin-2 system
- Twin mirror-polished 76mm exhaust tips
- OEM-style sleeve clamps and supplied installation hardware
Refer to product photographs for the supplied configuration. Turbochargers, exhaust manifolds, and additional aftermarket engine components are not included.
Professional Installation and Exhaust Fitment
- Verify turbocharger downpipe flange compatibility.
- Inspect underbody clearance and exhaust hanger alignment.
- Check transmission, driveshaft, suspension, and heat shield clearance.
- Install supplied clamps and hardware using appropriate procedures.
- Check all exhaust connections for leaks after installation.
- Professional installation is strongly recommended.
Intended for appropriate off-road or competition applications where permitted by law. Exhaust system modifications may be subject to emissions, noise, and inspection regulations. Confirm local legal requirements before installation. This listing does not establish emissions certification or public-road approval.
XS-POWER Audi Performance Exhaust - Global Distribution
XS-POWER supplies performance exhaust and turbocharger components for Audi enthusiasts, independent tuning specialists, performance workshops, and custom engine builders throughout international markets.
Our Audi 2.7T performance product range supports B5 S4 turbo upgrades, stainless steel exhaust systems, turbo downpipes, custom exhaust fabrication, and modified European performance vehicles.
Search for XS-POWER Audi S4 B5 2.7T turbo-back exhaust, Audi B5 S4 stainless steel downpipes, Audi S4 Twin-2 catback, dual 2.5-inch Audi exhaust, 3-inch Audi 2.7T downpipes, and complete Audi biturbo performance exhaust systems.
WORLDWIDE SHIPPING AVAILABLE - UNITED STATES, CANADA, UNITED KINGDOM, GERMANY, EUROPE, AUSTRALIA, NEW ZEALAND, JAPAN, AND GLOBAL MARKETS.
Frequently Asked Questions - Audi S4 B5 Turbo-Back Exhaust
What is included in this XS-POWER Audi S4 exhaust package?
This package includes the Twin-2 dual-muffler catback exhaust, 3-inch stainless steel downpipes with braided flex sections, polished exhaust tips, and supplied installation hardware.
What is the difference between Twin-1 and Twin-2?
This listing describes the Twin-2 configuration, which uses a mid muffler and rear muffler. Twin-1 is a separate configuration; its exact specifications should be confirmed before purchase.
Are the catback pipes really 2.5 inches?
Yes. The supplied Twin-2 catback is specified with true twin 2.5-inch exhaust piping.
Does the kit include 3-inch downpipes?
Yes. The described package includes 3-inch stainless steel mandrel-bent turbo downpipes with braided flex sections.
Will it work with a Stage 3 Audi S4?
It may be suitable for Stage 3 builds where the turbocharger flange, downpipe connection, and vehicle clearances are compatible. Some aftermarket turbo configurations require additional fabrication.
Is this exhaust made from stainless steel?
Yes. The catback and downpipes are specified as T304 stainless steel with TIG-welded construction.
Does this system guarantee horsepower gains?
No fixed power gain is guaranteed. Results depend on the complete engine, turbocharger, tuning, and exhaust configuration.
