Catless Twin Turbo Downpipe Exhaust for 2008-2014 BMW N63 X6/X5 550I 650I 750I B7 N63 B44 4.4L V8

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SKU: 21071SAS
Availability : In Stock Pre order Out of stock
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Description

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

Fitment:

  • 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 & Returns

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.

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