



Vendor:Speedzone Performance LLC
SPDZ1 4” N55 Downpipe for BMW M135, M235, M2, 335, and 435
SPDZ1 N55 Performance Downpipe
Unleash the full potential of your BMW
Take your driving experience to the next level with the SPDZ1 4” N55 Downpipe – a high-performance upgrade engineered for BMW enthusiasts who demand power, sound, and seamless fitment. Whether you’re pushing a stock setup or running upgraded turbos, this downpipe is your key to unlocking hidden horsepower and thrilling performance gains.
Why Choose SPDZ1?
✅ Dyno-Proven Performance
Gain up to +30HP on stock turbos, with even greater results when paired with upgraded setups. Experience sharper throttle response, quicker spool times, and aggressive mid-range power delivery.
✅ Optimized for Flow & Sound
Crafted with smooth, mandrel-bent tubing to reduce backpressure and eliminate unwanted cabin drone – giving you the deep, clean exhaust note you crave without sacrificing comfort.
✅ Built to Last
Made from premium-grade materials and backed by our lifetime warranty, the SPDZ1 N55 Downpipe is designed to perform under pressure – on the street or track.
✅ Guaranteed Fitment & Easy Installation
Precision-engineered to bolt directly to your factory or aftermarket system. No modifications, no headaches – just pure performance.
Vehicle Compatibility:
- 2014–2015 BMW M135i / M135i xDrive (produced after 07/2013)
- (ALL) - BMW M235i / M235i xDrive
- BMW M2 (N55 engine)
- 2014–2015 BMW 335i / 335i xDrive (produced after 07/2013)
- (ALL) - BMW 435i / 435i xDrive
Upgrade your exhaust. Elevate your drive.
With the SPDZ1 4” N55 Downpipe, you’re not just replacing a part – you’re redefining your BMW’s performance.
Ships within 1-2 business days.
100% Genuine Parts
Fitment Guaranteed

SPDZ1 4” N55 Downpipe for BMW M135, M235, M2, 335, and 435
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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.


