Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Upgrade your exhaust sound and performance with the SPDZ1 Universal Valved Performance Muffler Kit — a fully adaptable exhaust solution that lets you switch between refined cruising and aggressive performance tone at the touch of a button. Inspired by advanced valve-controlled designs like the Valvetronic Designs Universal Valved Muffler Kit, this kit adds dynamic exhaust control to virtually any vehicle with compatible exhaust piping.
Whether you’re cruising through town or pushing your ride on the open road, the SPDZ1 valved muffler system delivers a perfect blend of daily comfort and track-ready performance — all with a simple wireless or wired controller.
🚀 Key Performance Benefits
Dynamic Sound Control – Switch between quieter street modes and louder performance sound instantly.
High-Flow Valve System – Performance-oriented internal valving improves exhaust flow while giving you control of tone and volume.
Multiple Diameter Options – Compatible with 2.5" piping, making it a truly universal fit across many cars, trucks, and SUVs.
Stainless Steel Construction – Built with premium steel for strength, durability, and corrosion resistance.
Remote or Controller Integration – Choose between wireless or wired control options for valve actuation.
Universal Fitment – Designed to adapt into custom exhaust systems, axle-backs, or replacing factory mufflers.
🔧 What’s Included
High-flow valved muffler body (single muffler)
Valve actuator and controller (wireless or wired)
Mounting brackets, hardware, and clamps
Detailed installation guide
🏎️ How It Works
Exhaust valves open and close to route exhaust gases through alternate internal pathways, letting you dial in your preferred exhaust note and performance characteristics without changing the muffler.
📈 Why SPDZ1?
SPDZ1 performance parts are designed by enthusiasts for enthusiasts — focusing on real improvements you can hear and feel. This valved muffler kit gives you flexible sound control, improved flow, and a premium finish that stands out from standard fixed-output mufflers.
Whether you’re downsizing for daily comfort or powering up for spirited drives, this universal valved muffler kit is the ideal upgrade for performance gains and exhaust personality.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
