Audi B9.5 S4/S5 Stainless Steel Valved Exhaust
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Audi S4 B9 Full Valved Exhaust System by CenCal Motorsport
Unlock the true potential of your Audi S4/S5 B9's engine with CenCal Motorsport's full valved exhaust system. Designed to replace the restrictive factory exhaust, this system ensures your engine delivers an exhilarating sound experience up to the redline.
Key Features:
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Premium Construction: Crafted from T304 stainless steel for enhanced durability and corrosion resistance.
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Valved Exhaust Control: Equipped with electronic exhaust valves and a key fob remote system, allowing you to switch between aggressive and subdued exhaust notes seamlessly.
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Weight Reduction: This system is 16.4 lbs lighter than the OEM exhaust, contributing to improved vehicle dynamics.
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Optimized Flow: Fully mandrel-bent tubing ensures maximum exhaust flow, enhancing performance.
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Precision Engineering: Features TIG welds for high strength and reliability.
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Reversible Installation: Designed for a 100% bolt-on installation that is fully reversible, allowing you to return to stock at any time.
Fitment:
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2017 - 2024 Audi S4
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2018 - 2024 Audi S5
Experience unparalleled sound and performance with CenCal Motorsport's full valved exhaust system for your Audi S4/S5 B9. Whether you're seeking an aggressive exhaust note or a quiet ride, this system offers the flexibility and quality you desire.
This system is made to order, with an estimated production time of 15-20 days, followed by 5-7 days for shipping. Due to the manufacturing process of this system, cancellations are not feasible once production begins.
THIS PRODUCT IS FOR OFFROAD USE ONLY
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders take 24–48 hours to process once placed. Made-to-order items begin production after processing, while in-stock items are prepped, packaged, and ship within 3–4 days from our Oceanside, CA location (please allow extra time for packages to arrive during high-volume periods). Some items may be backordered—if so, we’ll email you with status and options. Freight items such as wheels, exhausts, trunks, and hoods require additional handling time and may ship separately.
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Customer Support
Real BMW-savvy humans here. We’re available Mon–Fri, 10am–5pm PT by email and phone/text for install questions, fitment help, or order updates. Send your year/model/trim (VIN if handy) and we’ll point you to the right parts fast.
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FAQ’s
Quick answers to the most common questions: fitment & compatibility, order changes/cancellations, build & lead times, international shipping & duties, and returns/exchanges. Start there for instant clarity—then reach out if you still need a hand.
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Contact Us
Need help choosing parts or tracking an order? Send an email to our support team, support@cencalmotorsport.com
Buy with confidence
Fitment guarantee
Engineered for your BMW. Guarantee applies with professional installation — if it doesn’t fit, we fix it.
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Real Support
Talk to real enthusiasts. Our team answers every email same business day (Mon–Fri, 9AM–5PM PST) so you’re never left hanging when it comes to your build.
About Us
What started as a group of BMW enthusiasts tired of overpriced parts and limited options is now a brand trusted by thousands of owners nationwide.
We designed our own product lines from the ground up and built the production infrastructure to make them happen. No middlemen, no compromises. Just the parts we actually wanted on our own builds.
Now we operate out of Oceanside, California, engineering valved exhaust systems, carbon fiber, forged wheels, front-mount intakes, and more. Everything is designed in-house, tested on real platforms, and stocked locally for fast shipping.
This is just the beginning.