SPDZ1 4.5” Downpipes N20 & N26 2012 – 2017 BMW 120i, 128i, 228i, 320i, 328i, 428i F20/F21/F22/F30/F32/F33/F36
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
SKU: SPDZ1-N20DP-4
SPDZ1 4.5” Downpipes for BMW N20 & N26 (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:
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Massive 4.5” Primary Design – Optimized for maximum flow and reduced backpressure
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Premium T304 Stainless Steel – Corrosion-resistant and TIG-welded for long-term durability
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Dyno-Proven Gains – Up to +25 HP and +35 lb-ft torque on a tuned vehicle
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Quicker Turbo Spool – Improves low-RPM torque and high-RPM breathing
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Mandrel-Bent Tubing – Maintains consistent diameter through bends for optimal airflow
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CNC-Machined Flanges – Perfect OEM fitment, no leaks, no guesswork
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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.
Compatibility:
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BMW 120i / 128i (F20 / F21)
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BMW 228i (F22)
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BMW 320i / 328i (F30 / F31)
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BMW 428i (F32 / F33)
For model years 2012–2017 equipped with N20 or N26 engines
Our History
For 23 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.