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.
SPDZ1 4.5” Downpipes for BMW N20 (2012–2017) Fits: BMW 120i, 128i, 228i, 320i, 328i, 428i — F20 / F21 / F22 / F30 / F31 / F32 / F33
Unleash True Turbo Power The SPDZ1 4.5” Downpipe is precision-engineered to bring your BMW’s N20 & N26 turbocharged engine to life. By replacing the restrictive factory catalytic downpipe with our free-flowing 4.5” high-grade stainless steel design, you’ll experience sharper throttle response, faster spool, and a deeper, more aggressive exhaust note.
Key Features:
Massive 4.5” Primary Design – Optimized for maximum flow and reduced backpressure
Premium T304 Stainless Steel – Corrosion-resistant and TIG-welded for long-term durability
Dyno-Proven Gains – Up to +25 HP and +35 lb-ft torque on a tuned vehicle
Quicker Turbo Spool – Improves low-RPM torque and high-RPM breathing
Mandrel-Bent Tubing – Maintains consistent diameter through bends for optimal airflow
CNC-Machined Flanges – Perfect OEM fitment, no leaks, no guesswork
Bolt-On Installation – Uses factory mounting points, no cutting required
Performance + Sound On stock tuning, expect a noticeable bump in mid-range power and torque, with a throatier, more aggressive tone. Pair with ECU tuning for maximum gains and the true potential of your turbo.
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.