AUDI 00-02 B5 S4 2.7t "TWIN 1" True 3.0" Dual TURBO BACK Exhaust AND DOWNPIPES II

Upgrade your Audi S4 B5 2.7-liter twin-turbo exhaust system with the tried-and-true XS-POWER Twin-1 Turbo-Back Exhaust Package. This complete performance exhaust system combines our dual-muffler Twin-1 cat-back with a pair of full 3-inch catless downpipes for improved exhaust flow, reduced restriction and a deeper, more aggressive exhaust tone.

The Twin-1 cat-back uses genuine 2.5-inch exhaust piping with both a center muffler and rear muffler. Unlike many competing systems that advertise oversized tubing while using smaller transitions or internal restrictions, the XS-POWER system is engineered around true high-flow piping throughout the main exhaust section.

The included test-pipe downpipes feature full 3-inch stainless-steel construction, braided flex sections and tapered transitions that connect the 3-inch downpipes to the 2.5-inch cat-back system. This combination is suitable for stock turbo vehicles as well as extensively modified Stage 3 and larger-turbo builds.

• True dual 2.5-inch exhaust piping
• Center muffler and rear muffler configuration
• TIG-welded T304 stainless-steel construction
• Mirror-polished twin 76mm exhaust tips
• Deep and aggressive European V6 exhaust tone
• Designed for improved exhaust flow and reduced backpressure
• OEM-style sleeve clamps for a clean and straightforward installation
• Proven design used on stock, tuned and Stage 3 Audi S4 builds

• Pair of full 3-inch test-pipe downpipes
• TIG-welded T304 stainless-steel construction
• Braided stainless-steel flex sections
• High-flow catless design
• Tapered 3-inch to 2.5-inch outlet transitions
• Designed to connect directly to the included Twin-1 cat-back exhaust
• Helps reduce exhaust restriction after the turbochargers
• Supports increased airflow on upgraded turbo and Stage 3 applications

• Improved exhaust flow from the turbochargers to the exhaust tips
• Reduced exhaust backpressure compared with the restrictive factory system
• Faster turbo response and improved throttle response
• Potential horsepower and torque gains when paired with proper engine tuning
• Supports stock turbo, K04, RS4, Stage 3 and larger-turbo configurations
• Deeper and more aggressive exhaust note
• Complete matched system eliminates the need to source separate components

• One XS-POWER Twin-1 dual-muffler cat-back exhaust system
• One pair of full 3-inch catless downpipes
• Braided flex sections installed on the downpipes
• Tapered downpipe-to-cat-back connection pipes
• Mirror-polished twin 76mm exhaust tips
• OEM-style sleeve clamps
• Required installation hardware shown with the product

This system is designed around factory-style mounting locations and includes sleeve-style connections to simplify installation. Due to vehicle age, previous modifications, corrosion, worn engine mounts and production tolerances, minor adjustment may occasionally be required.

Professional installation by an experienced Audi or European performance technician is strongly recommended. Exhaust components should be loosely assembled and aligned before all clamps and fasteners are fully tightened.

• Proven Audi 2.7T performance exhaust design
• True high-flow stainless-steel piping
• Complete downpipe and cat-back package
• Excellent value compared with systems costing substantially more
• Used by Audi enthusiasts in street-performance and racing applications
• Recognized throughout the Audi performance community and Audizine forums
• Global shipping available