Stainless Valved Catback Exhaust System for Audi B8 B8.5 S4 S5
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
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
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High-Pitch X-Pipe Design: Produces a sharper, more exotic tone while improving exhaust flow
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Vacuum Valve Control: On-demand sound adjustment using the included remote
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Mandrel-Bent Tubing: Optimized flow for improved throttle response and power delivery
Sound & Control
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Valves Closed: Quiet and refined for daily driving and highway cruising
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Valves Open: Aggressive, high-energy exhaust tone with strong low-end and high-RPM excitement
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Remote Control: Instantly operate valves from inside the vehicle
Construction & Details
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Material: T304 stainless steel for durability and corrosion resistance
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Weight Savings: Approx. 12.3 lbs lighter than factory exhaust
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Craftsmanship: Precision TIG welding and smooth mandrel bends
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Tubing Diameter: 2.5" from front to exhaust tips
Vehicle Fitment
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2010–2016 Audi S4 (B8 / B8.5)
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2010–2016 Audi S5 (B8 / B8.5)
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.