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.
Unlock the full potential of your 2015–2023 Mustang GT 5.0L Coyote with the SPDZ1 1 7/8" Longtube Headers & X-Pipe System. Engineered for enthusiasts who demand real horsepower gains and a race-inspired exhaust note, this complete system is built to outperform stock and budget alternatives.
Crafted from premium 304 stainless steel with precision TIG welds and CNC-machined flanges, SPDZ1 headers are designed for maximum durability, perfect fitment, and unrestricted exhaust flow. The included 3” X-Pipe balances exhaust pulses for improved scavenging, sharper throttle response, and an aggressive tone that commands attention on the street or track.
✅ Key Features
Mandrel-Bent 1 7/8” Primaries – Large-diameter tubing for maximum airflow & horsepower
3” Collector with Merge Spike – Improves exhaust velocity and scavenging efficiency
True Longtube Header Design – Gains of 25+ rwhp with proper tuning
Precision TIG-Welded Joints – Strong, clean welds built for high-performance heat cycles
CNC-Machined, Port-Matched Flanges – Leak-free seal and OE-level fitment
Full 304 Stainless Steel Construction – Corrosion-resistant natural stainless finish
Graphite Manifold Gaskets & Hardware Included – Ready-to-install performance upgrade
X-Pipe Included – Optimizes exhaust tone & flow for balanced performance
⚠️ Fitment Notes
Fits 2015–2023 Mustang GT 5.0L Coyote engines
Gen 1 (2011) and some Gen 3 (2018+) Coyote engines may use M10x1.25 header bolts
Late Gen 1 (2011) & Gen 2 (2015–2017) typically use M10x1.5 header bolts
Please confirm thread pitch before installation
We suggest the use of our O2 extension wires for a quick easy install, you can purchase the 2015-2017 hardnesses here, and the 2018+ harnesses here.
💡 Why Choose SPDZ1? Unlike mass-produced budget options, every SPDZ1 header system is dyno-tested, track-proven, and built to last. From stronger welds to precision collectors, SPDZ1 delivers the power, sound, and reliability your Mustang deserves.
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.
