Catless Twin Turbo Downpipe Exhaust for 2008-2014 BMW N63 X6/X5 550I 650I 750I B7 N63 B44 4.4L V8
Brand New
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Experience the perfect blend of quality engineering and exceptional value with these high-performance Downpipe Exhaust. Manufactured from durable T-304 stainless steel with precision CNC-machined flanges and TIG/MIG welded construction, they deliver superior durability and flow characteristics. Computerized mandrel bending technology ensures smooth exhaust airflow for improved scavenging and reduced back pressure.
Features:
- Pipe Inlet Diameter: 3"
- OD Pipe Outlet Diameter: 2.5"
- OD Pipe Thickness:16 gauge (1.5mm)
- Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends i.e. Maximizing Smoothest Exhaust Airflow
- Includes Both Left and Right Downpipes
- TIG welded CNC Machine Flange for Strength and Durability
- Increase Engine Output and Efficiency. Gain 10 - 15 HPs (approximately)
- O2 Sensor Bung Insertions Included
- Direct Bolt-In Replacement of Catalytic Converter
- Perforated Core Resonator
- Integrated Flex Pipe ( Braided & Accordion Style)
- Professional Installation is Highly Recommended
- No Instruction Included
- 11-13 BMW 550i
- 10-13 BMW 550i GT, xDrive
- 2012 BMW 650i, xDrive
- 09-12 BMW 750i, xDrive
- 09-12 BMW 750Li, xDrive
- 11-12 BMW Alpina B7, xDrive, B7L, B7L xDrive
- 10-13 BMW X5
- 08-14 BMW X6
- Fits 4.4L Turbocharged Engines Only
| VEHICLE NAME | YEAR | ENGINE |
|---|---|---|
| BMW 550i | 2011~2013 | 4.4L |
| BMW 550i GT | 2010~2013 | 4.4L |
| BMW 550i GT xDrive | 2010~2013 | 4.4L |
| BMW 550i xDrive | 2011~2013 | 4.4L |
| BMW 650i | 2012 | 4.4L |
| BMW 650i xDrive | 2012 | 4.4L |
| BMW 750i | 2009~2012 | 4.4L |
| BMW 750i xDrive | 2010~2012 | 4.4L |
| BMW Alpina B7 | 2011~2012 | 4.4L |
| BMW Alpina B7 xDrive | 2011~2012 | 4.4L |
| BMW Alpina B7L | 2011~2012 | 4.4L |
| BMW Alpina B7L xDrive | 2011~2012 | 4.4L |
| BMW X5 | 2010~2013 | 4.4L |
SHIPPING & DELIVERY
Fast Processing & Reliable Transit
- Processing: Orders are processed and shipped from the nearest warehouse within 24 hours.
- Delivery: Estimated delivery time is approximately 4 to 5 business days.
RETURNS & EXCHANGES
30-Day Hassle-Free Policy
- Return Window: We offer a 30-day return policy from the date of delivery.
- Process: To initiate a return or exchange, please contact our customer service team first to receive authorization and instructions.
WARRANTY
2-Year Limited Replacement Warranty
- Duration: All products are backed by a 2-year limited warranty.
- Coverage: This warranty covers manufacturing defects and product failures under normal use, and provides a replacement for qualified cases (repairs are not performed).
CUSTOMER SUPPORT
We’re Here to Help – Contact Us First
- Priority Contact: For any order-related issues—including returns, warranty claims, or general inquiries—please contact us first before taking further action. We are committed to resolving your concern promptly.
- Feedback Notice: If you are unsatisfied, we kindly ask that you allow us an opportunity to address the issue before leaving neutral or negative feedback.
- Email Support: You can reach us at support@SAMEXHAUST.com.
Attention
Products on this site are for off-road/racing use only and are not legal for public roads where emissions laws apply.
Professional installation recommended. Removing emissions equipment (DPF, CAT, SCR, DOC) requires deleting related sensors and a compatible tuner to avoid engine codes.
Performance gains may vary—no guarantees.

