Valved Stainless Steel Catback Exhaust System for Infiniti Q50S 3.7L
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 the sound and performance of your Infiniti Q50S 3.7L with this Valved Stainless Steel Catback Exhaust System, engineered to deliver aggressive performance acoustics with driver‑controlled sound adjustment.
Designed specifically for the 3.7L V6 platform, this system improves exhaust flow by reducing factory backpressure, helping enhance throttle response and mid‑range acceleration. The integrated valved muffler system allows you to switch between a refined daily‑driving tone and a louder, race‑inspired exhaust note when desired.
Constructed from premium T304 stainless steel, this exhaust system offers excellent heat resistance, durability, and long‑term corrosion protection.
Precision engineered for direct bolt‑on installation using factory mounting points.
Sound Control
Valves Closed
Smooth, refined exhaust tone with minimal cabin drone — ideal for daily driving.
Valves Open
Deep, aggressive V6 performance sound with sharper throttle response and a sport‑focused character.
Performance Features
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Valved catback exhaust system
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Premium T304 stainless steel construction
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Reduced backpressure vs OEM
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Improved throttle response
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Enhanced mid‑range performance
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Mandrel bent piping for optimal flow
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Precision TIG welded construction
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Direct bolt‑on installation
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No cutting or permanent modifications required
Fitment
Infiniti Q50S
3.7L V6
Model Years 2014–2018
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.