Vendor:Speedzone Performance LLC
SPDZ1 Racing Downpipes B46 2016 – 2021 BMW 120i, 220i, 230i, 320i, 330e, 330i, 420i, 430i, 630i, 730i & xDrive G & F Chassis
SPDZ1 B46 Stainless Steel Downpipe Upgrade – BMW G20 320i xDrive (B46 Engine) 2019+ BMW 320i xDrive (G20 Chassis)
Unlock hidden power and improve turbocharger response with the SPDZ1 High-Performance Downpipe Upgrade for the BMW B46-powered G20 320i xDrive. Designed for enthusiasts seeking optimal performance and reliability, our downpipe dramatically improves exhaust flow by removing the restrictive OEM catalytic converter—maximizing efficiency and enhancing sound under boost.
Key Features:
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CNC-Crafted for Direct Fitment
Designed using 3D scans and CAD modeling, the SPDZ1 downpipe offers true plug-and-play fitment with factory turbo and exhaust components. No cutting or welding required. -
Mandrel-Bent T304 Stainless Steel Construction
Built from 100% mandrel-bent T304 stainless steel for unmatched durability, corrosion resistance, and heat resilience. All welds are TIG-finished by skilled fabricators to ensure long-term performance under high-load conditions. -
Optimized Internal Diameter
Flow-optimized piping reduces backpressure and increases exhaust velocity, improving turbo spool and minimizing turbo lag. This results in noticeable horsepower and torque gains when paired with tuning. -
Aggressive Exhaust Note
Enhances the auditory experience of your BMW with a deeper, more refined tone under acceleration—without introducing harsh cabin drone. -
Dyno-Tested Performance Gains
Gains of 20–30+ horsepower and torque are achievable when combined with supporting mods and ECU calibration. - includes heavy duty gasket for Free!
- V-Band Flange Type
Product Specs:
- Engine Compatibility: BMW B46 2.0L Turbocharged I4
- Chassis: G20 BMW 320i xDrive (2019+)
- Material: T304 Stainless Steel
- Configuration: Catless (Race Use Only)
- Install: Fully reversible; bolts to stock or aftermarket exhaust systems
Fitment:
- 2016-2020 F20/F22 BMW 220i, 230i including xDrive (B46 2.0T engine)
- 2016-2020 F30/F31 BMW 320i, 330e, 330i including xDrive (B46 2.0T Engine)
- 2016-2020 F32/F33/F36 BMW 420i, 430i including xDrive Models (B46 2.0T Engine)
- 2016 – 2020 G30 BMW 530i, 530e including xDrive Models (B46 2.0T Engine)
- 2016-2020 G11 BMW 730i, 740e including xDrive Models (B46 2.0T Engine)
- 2019-2023 G20 BMW 320i, 330i including xDrive (B46 2.0T Engine)
- 2019+ G29 BMW Z4 30i (B46 2.0T Engine)
- 2020+ A91 Toyota Supra 2.0 (B46 2.0T Engine)
Installation Note:
Installing catless B46 downpipes will trigger a check engine light (CEL) due to the removal of the OEM catalytic converters. To resolve this, we offer the Spdz1 Mini Cat, which attaches to the O₂ sensors and effectively eliminates the CEL without requiring a tune.
Why SPDZ1?
As a brand rooted in aftermarket performance and tuning, SPDZ1 knows that the details matter—from how something looks to how it fits and performs. These finishers reflect that mindset: built to be seen, built to last, built for your build.
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed
SPDZ1 Racing Downpipes B46 2016 – 2021 BMW 120i, 220i, 230i, 320i, 330e, 330i, 420i, 430i, 630i, 730i & xDrive G & F Chassis
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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Contact Us
Leave us a message at: +17034100852 or email us at: sales@turbotechperformance.com
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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.