T304 Stainless Valved Catback Exhaust System for Audi Q8 RSQ8 4.0T
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
Upgrade sound, performance, and driving engagement on your Audi RS Q8 4.0T with the STRATEC Valved Cat-Back Exhaust System. Designed as a direct bolt-on replacement for the factory exhaust, this system delivers aggressive performance sound on demand while maintaining refined cruising comfort when valves are closed.
Constructed from premium T304 stainless steel, this exhaust offers excellent heat resistance, corrosion protection, and long-term durability. Featuring OEM-style electronic valves, you can switch instantly between a deep, sporty exhaust tone and quiet factory-like operation.
The free-flow 3-inch tubing improves exhaust efficiency and throttle response, while retaining the OEM exhaust tips for a clean, factory-fit appearance.
Key Features
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Fits Audi RS Q8 4.0T (2020–2025)
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T304 stainless steel construction for strength and corrosion resistance
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Valved cat-back exhaust system with OEM-style electronic valve control
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3-inch tubing from front to rear for improved exhaust flow
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Aggressive exhaust tone with valves open
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Quiet, refined sound with valves closed
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11.5 lb lighter than factory exhaust
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Precision TIG-welded for durability and premium finish
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Retains OEM exhaust tips for factory appearance
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Direct bolt-on installation using factory mounting points
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100% reversible — return to stock at any time
Construction & Quality
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Material: T304 stainless steel
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Valves: OEM-style electronic valves
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Weight Savings: Approx. 11.5 lbs vs OEM
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Finish: Brushed stainless steel
What’s Included
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T304 stainless steel valved cat-back exhaust system
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OEM-style electronic valves
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All required clamps and installation hardware
Installation Notes
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Direct bolt-on fit
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Professional installation recommended
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.