SPDZ1 4” N55 Downpipe for BMW M135, M235, M2, 335, and 435
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-N55DP-4
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)
- BMW M235i / M235i xDrive
- BMW M2 (N55 engine)
- 2014–2015 BMW 335i / 335i xDrive (produced after 07/2013)
- 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.
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.