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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.
Honda Civic 1.5T Turbo (2016-2023) | EX • LX • Sport • Si
Unleash the Full Potential of Your 1.5T Turbo
Take your Honda Civic's performance to the next level with the SPDZ1 2.5" Catless Downpipe & Front Pipe. Engineered specifically for the 2016-2023 Honda Civic 1.5L Turbo platform, this complete turbo-back upgrade dramatically improves exhaust flow by replacing the restrictive factory catalytic converter and front pipe.
Manufactured from premium stainless steel and precision TIG welded, the SPDZ1 downpipe is built to withstand extreme temperatures while delivering improved turbo spool, quicker throttle response, and a deep, aggressive exhaust tone.
Whether you're running a stock turbo or planning future performance upgrades, this is one of the most effective bolt-on modifications available for the L15B7 engine.
Why Choose SPDZ1?
Unlike restrictive OEM components, the SPDZ1 system is designed to maximize exhaust flow immediately after the turbocharger, allowing exhaust gases to exit more efficiently.
Benefits Include:
✔ Faster Turbo Spool
✔ Improved Throttle Response
✔ Reduced Turbo Backpressure
✔ Increased Horsepower Potential
✔ Increased Torque
✔ More Aggressive Exhaust Tone
✔ Improved High-RPM Performance
✔ Better Exhaust Flow for Tuned Vehicles
✔ Precision CNC Flanges
✔ Premium TIG-Welded Construction
✔ Mandrel Bent 2.5" Stainless Steel Tubing
✔ Direct Bolt-On Installation
Premium Construction
Every SPDZ1 downpipe is manufactured using high-quality stainless steel for exceptional durability and corrosion resistance.
Features
Premium Stainless Steel Construction
Full 2.5" Mandrel Bent Tubing
Precision TIG Welds
CNC Machined Flanges
High-Strength Mounting Hardware Included
O2 Sensor Bung
Direct OEM Replacement Design
Built to Handle High Boost Applications
Performance Gains
Replacing the restrictive factory catalytic converter and front pipe allows the turbocharger to operate more efficiently.
Typical benefits include:
Faster Turbo Response
Stronger Mid-Range Power
Improved Top-End Performance
Increased Turbo Efficiency
Lower Exhaust Backpressure
More Aggressive Exhaust Sound
Actual horsepower gains will vary depending on supporting modifications and ECU tuning.
Vehicle Fitment
Fits:
2016 Honda Civic 1.5T EX
2016 Honda Civic 1.5T LX
2016 Honda Civic 1.5T Touring
2016 Honda Civic 1.5T Sport
2017 Honda Civic 1.5T EX
2017 Honda Civic 1.5T Sport
2017 Honda Civic Si
2018 Honda Civic 1.5T EX
2018 Honda Civic 1.5T Sport
2018 Honda Civic Si
2019 Honda Civic 1.5T EX
2019 Honda Civic Sport
2019 Honda Civic Si
2020 Honda Civic 1.5T EX
2020 Honda Civic Sport
2020 Honda Civic Si
2021 Honda Civic 1.5T EX
2021 Honda Civic Sport
2021 Honda Civic Si
2022 Honda Civic Si*
2023 Honda Civic Si*
Please verify your vehicle before ordering.
What's Included
SPDZ1 2.5" Catless Downpipe
SPDZ1 2.5" Front Pipe
Installation Hardware
Required Gaskets
O2 Sensor Bung(s)
Installation
Direct Bolt-On Design
No Cutting or Welding Required
Uses Factory Mounting Locations
Professional Installation Recommended
Tuning Information
While the vehicle can physically operate with this downpipe installed, an ECU tune is strongly recommended to maximize performance and reduce the likelihood of catalyst efficiency fault codes (Check Engine Light).
Off-Road Use Notice
This product is intended for closed-course competition and off-road use only.
It is not legal for installation on pollution-controlled vehicles in many states or countries. Please verify your local emissions regulations before purchasing.
Why Buy SPDZ1?
At SPDZ1, we engineer products with one goal in mind: deliver premium performance without the premium price tag. Every product is designed for enthusiasts who demand exceptional fitment, reliable performance, and long-term durability.
SPDZ1 Performance
Premium Materials
Precision Manufacturing
Enthusiast-Tested Designs
Performance You Can Feel
Backed by Speedzone's 27+ Years of Automotive Experience
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.
