Vendor:Speedzone Performance LLC
SPDZ1 4.5” Downpipes N20 2012 – 2017 BMW 120i, 128i, 228i, 320i, 328i, 428i F20/F21/F22/F30/F32/F33/F36
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:
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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.
This item fits the following BMWs:
2012 – 2017 F30 BMW 320i & 320xi N20 & N26
2012 – 2017 F30 BMW 328i & 328xi N20 & N26
2013 – 2017 F32/F33 BMW 420i & 420xi N20 & N26
2013 – 2017 F32/F33 BMW 428i & 428xi N20 & N26
2013 – 2017 F36 BMW 428i & 428xi Gran Coupe N20 & N26
2012 – 2017 F20/F21 BMW 128i & 128xi N20 & N26
2013 – 2017 F22 BMW 220i & 220xi N20 & N26
2013 – 2017 F22 BMW 228i & 228xi N20 & N26
(Please confirm mid-pipe flange)
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed
SPDZ1 4.5” Downpipes N20 2012 – 2017 BMW 120i, 128i, 228i, 320i, 328i, 428i F20/F21/F22/F30/F32/F33/F36
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.