Stainless Valved Catback Exhaust System for Audi B8 B8.5 S4 S5

$1,899.95 USD

Before You Order

Confirm fitment, lead time, and install details before checkout.

Fitment Support In Stock / Made To Order Returns Check
Fitment Check Confirm year, make, model, trim, bumper style, wiring, and selected options before checkout.
Build Details Photos, vehicle search, and recommendations are helpful guides; final fitment can vary by build.
Lead Time In-stock items move fastest. Made-to-order specialty parts may need extra preparation before tracking updates.
Inspect First Inspect every part before painting, drilling, cutting, modifying, or installing it.
Not sure it fits? Send your vehicle details and product link to support@vektomotorsports.com. Ask Support

COMPLETE YOUR SETUP

Transform the sound and driving experience of your Audi S4 or S5 B8/B8.5 with the STRATEC Valved Exhaust System. Designed for the supercharged V6 platform, this system delivers a unique high-pitch tone while retaining deep, aggressive low-end character—creating a sound profile that stands out from traditional setups.

Constructed entirely from T304 stainless steel and featuring a high-pitch X-pipe, the system runs 2.5-inch tubing from front to rear, enhancing exhaust flow and sound across the entire RPM range. Integrated vacuum-actuated valves, controlled via an included key fob remote, allow instant switching between refined cruising and an aggressive, motorsport-inspired exhaust note.

Why It Works

  • High-Pitch X-Pipe Design: Produces a sharper, more exotic tone while improving exhaust flow

  • Vacuum Valve Control: On-demand sound adjustment using the included remote

  • Mandrel-Bent Tubing: Optimized flow for improved throttle response and power delivery

Sound & Control

  • Valves Closed: Quiet and refined for daily driving and highway cruising

  • Valves Open: Aggressive, high-energy exhaust tone with strong low-end and high-RPM excitement

  • Remote Control: Instantly operate valves from inside the vehicle

Construction & Details

  • Material: T304 stainless steel for durability and corrosion resistance

  • Weight Savings: Approx. 12.3 lbs lighter than factory exhaust

  • Craftsmanship: Precision TIG welding and smooth mandrel bends

  • Tubing Diameter: 2.5" from front to exhaust tips

Vehicle Fitment

  • 2010–2016 Audi S4 (B8 / B8.5)

  • 2010–2016 Audi S5 (B8 / B8.5)

Description

Transform the sound and driving experience of your Audi S4 or S5 B8/B8.5 with the STRATEC Valved Exhaust System. Designed for the supercharged V6 platform, this system delivers a unique high-pitch tone while retaining deep, aggressive low-end character—creating a sound profile that stands out from traditional setups.

Constructed entirely from T304 stainless steel and featuring a high-pitch X-pipe, the system runs 2.5-inch tubing from front to rear, enhancing exhaust flow and sound across the entire RPM range. Integrated vacuum-actuated valves, controlled via an included key fob remote, allow instant switching between refined cruising and an aggressive, motorsport-inspired exhaust note.

Why It Works

  • High-Pitch X-Pipe Design: Produces a sharper, more exotic tone while improving exhaust flow

  • Vacuum Valve Control: On-demand sound adjustment using the included remote

  • Mandrel-Bent Tubing: Optimized flow for improved throttle response and power delivery

Sound & Control

  • Valves Closed: Quiet and refined for daily driving and highway cruising

  • Valves Open: Aggressive, high-energy exhaust tone with strong low-end and high-RPM excitement

  • Remote Control: Instantly operate valves from inside the vehicle

Construction & Details

  • Material: T304 stainless steel for durability and corrosion resistance

  • Weight Savings: Approx. 12.3 lbs lighter than factory exhaust

  • Craftsmanship: Precision TIG welding and smooth mandrel bends

  • Tubing Diameter: 2.5" from front to exhaust tips

Vehicle Fitment

  • 2010–2016 Audi S4 (B8 / B8.5)

  • 2010–2016 Audi S5 (B8 / B8.5)

Fitment & Install Notes

Fitment first: Confirm your vehicle year, make, model, trim, bumper style, wiring, and product options before checkout. Product photos, vehicle search, and recommendations are helpful guides, but final fitment can depend on trim, modifications, and install setup.

  • Installation: Professional installation is recommended for lighting, exhaust, carbon fiber, steering wheel, brake, and body components.
  • Lead time: In-stock items move fastest. Made-to-order specialty parts may need extra preparation before tracking updates.
  • Before install: Inspect all parts before painting, drilling, cutting, modifying, or installing. Contact us first if anything looks incorrect.
  • Need help? Email support@vektomotorsports.com before purchase if you want fitment support for your build.