Audi B8 / B8.5 S4 & S5 Valved Exhaust System

T304 Stainless Steel, High-Pitch X-Pipe, Vacuum Valve Control

Overview

Transform your supercharged V6 into a true auditory experience.
Our Valvetronic Designs Valved Exhaust System for the Audi B8 and B8.5 S4/S5 delivers a unique, high-pitch wail while retaining low-end rawness for a sound profile unlike anything the platform has heard before.

Constructed entirely from T304 stainless steel and featuring our high-pitch X-pipe technology, this system runs 2.5 inches from front to rear, unlocking an exhilarating tone across the entire rev range. With integrated vacuum-actuated valves controlled via an included key fob remote, you have instant flexibility to switch from refined cruising to an aggressive, motorsport-inspired soundtrack.

Why It Works

• High-Pitch X-Pipe Technology: Creates a sharper, more exotic tone while enhancing flow.

• Vacuum Valve Control: Allows on-demand sound control from the included key fob remote.

• Full Mandrel-Bent Design: Optimized flow for improved throttle response and power delivery.

Sound & Control

• Valves Closed: Quiet enough for early morning starts and comfortable highway cruising.

• Valves Open: Releases the full character of the supercharged V6 with both low-end depth and high-pitch excitement.

• Remote Control: Operate valves instantly from the driver’s seat using the included key fob system.

Construction & Options

• Material: T304 stainless steel for long-term durability and corrosion resistance.

• Weight Savings: 12.3 lb lighter than the factory exhaust.

• Craftsmanship: Precision TIG welds and mandrel bends for maximum flow and strength.

• Diameter: 2.5″ tubing from front to tips.

Fitment

• 2010–2016 Audi S4 (B8/B8.5)

• 2010–2016 Audi S5 (B8/B8.5)

Installation Notes

• Direct OEM replacement—no permanent modifications required.

• 100% reversible—return to stock at any time.

What’s Included

• T304 stainless steel valved exhaust system

• Integrated high-pitch X-pipe

• Vacuum-actuated valves with key fob control system

• All necessary clamps and hardware

Specifications

• Tubing Diameter: 2.5″ from front to tips

• Material: T304 stainless steel

• Valves: Vacuum-actuated, remote controlled

• Weight Savings: 12.3 lb lighter than OEM