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ARM F10 550I N63 / N63TU 3" CATLESS DOWNPIPES | DECOR - COLORADO N5X
ARM F10 550I N63 / N63TU 3" CATLESS DOWNPIPES | DECOR - COLORADO N5X
ARM F10 550I N63 / N63TU 3" CATLESS DOWNPIPES | DECOR - COLORADO N5X
ARM F10 550I N63 / N63TU 3" CATLESS DOWNPIPES | DECOR - COLORADO N5X
$397.00

ARM F10 550I N63 / N63TU 3" CATLESS DOWNPIPES | DECOR

ARM

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This product is for decoration purposes only and is intended to be mounted on a wall. It is NOT designed or intended to be used in any way that may violate any laws. Colorado N5X will not be responsible for the use, or illegal use, of Colorado N5X Merchandise.

HIGHLIGHTS
• Gain up to +43whp / 48wtq
• Improved Turbo Spool
• Enhanced Exhaust Note
• Fully Reversible
 
PROFILE
ARM Motorsports' new N63/N63TU downpipes for the 4.4L V8 Twin-Turbo powered 550i allows you to take your N63/N63TU engine to the next level. Made with full 304 Stainless Steel and 3" construction these downpipes provide a significant increase in power and torque over the OEM catted downpipes. In addition to the massive power gains, these downpipes open up an incredible exhaust sound from the turbocharged V8 that will shock and awe onlookers!
By replacing the OEM downpipes with the ARM Catless Downpipes, you'll be removing the restriction from the OEM converters which will reduce exhaust back-pressure and allow the exhaust from the turbochargers to flow more freely. This increase in exhaust flow allows for the turbos to spool faster, increasing power and torque throughout the RPM range of your 550i. 
 
DYNO PROVEN
Our test car was an N63-equipped 2012 550i GT optioned with the all-wheel drive xDrive system. It came with a Stage 2 tune installed making our baseline numbers 412awhp and 482awtq. After installing the ARM 3" Downpipes and Cold Air Intake, we recorded gains of 48whp and 43wtq over the standard Stage 2 tune for an impressive total of 460awhp and 525awtq. 
 
N63 Downpipes Dyno
 
CONSTRUCTION
As with all BMW's, everything is designed to fit in a very compact space, and the N63/N63TU 550i downpipes are no exception. However, BMW did an excellent job of engineering the downpipes to flow in the smoothest path from the turbocharges down to the mid pipe section. Our downpipes essentially followed the same exhaust flow path with a few small modifications to make installation easier. Consequently, the ARM N63/N63TU downpipes mount up to the turbos and midpipes with the same precision as you would expect from the factory 550i downpipes. 
 
N63 Downpipes F10 550i Exhaust
 
The ARM N63/N63TU 550i downpipes come with a flex section to relieve stress between the upper and lower portion of the downpipe from engine movement during aggressive driving. To further reduce any tension on the turbochargers, we have developed an upper and lower bracket, one being on the section of pipe above the flex joint where it secures to the engine block, and the other on the lower portion below the flex joint where it is secured to the transmission housing. These are the same points BMW designed their factory 550i downpipes to be secured, which means a strong and lasting connection safe for all the components on the vehicle.
 
N63 Downpipes F10 550i Exhaust
 
The ARM N63/N63TU 550i Downpipes utilize two O2 sensor bungs on each downpipe to allow for reinstalling the O2 sensors in their factory locations. This not only allows for the accommodation of the factory heat shield, but also allows the correct O2 sensor data to be sent to the DME. This is essential for the DME to properly monitor the parameters in the exhaust that are critical to having your 550i motor running smoothly. 
 
CEL DELETE KIT
The installation of catless downpipes on your N63/N63TU will result in an inevitable check engine light (CEL) as the DME will detect that emissions are not being burnt-up by the OEM catalyst.  To remove this CEL without having to tune it out we offer the CEL Delete Kit which is comprised of two O2 sensor spacers specifically calibrated to comply with BMW's parameters for a functioning catalyst.  These install into the post-catalyst O2 sensor bungs on each N63 Downpipe, effectively removing the CEL that would otherwise appear.
 
IN THE BOX
• ARM N63 3" Catless Downpipes
• ARM Crush Brackets
• Hardware Kit
  
FITMENT GUIDE
The ARM N63/TU Catless Downpipes are compatible with the cars on the list below that have a slip-fit style OEM downpipe only. The most reliable and accurate way is to simply look under your vehicle for the connection point between the downpipe and mid pipe. In most cases, this is visible without having to remove any undertrays or covers. If your connections look like the images below and your car is listed on the fitment chart, these will fit your vehicle. 

Make
Chassis
Model
Engine
BMW
F01
750i
N63/TU 4.4L
BMW
F01
750i xDrive
N63/TU 4.4L
BMW
F01
Alpina B7
N63/TU 4.4L
BMW
F02
750Li
N63/TU 4.4L
BMW
F02
750Li xDrive
N63/TU 4.4L
BMW
F06
650i
N63/TU 4.4L
BMW
F06
650i xDrive
N63/TU 4.4L
BMW
F06
Alpina B6 xDrive
N63/TU 4.4L
BMW
F07
550i
N63/TU 4.4L
BMW
F07
550i xDrive
N63/TU 4.4L
BMW
F10
550i
N63/TU 4.4L
BMW
F10
550i xDrive
N63/TU 4.4L
BMW
F12
650i
N63/TU 4.4L
BMW
F12
650iX
N63/TU 4.4L
BMW
F13
650i
N63/TU 4.4L
BMW
F13
650iX
N63/TU 4.4L
 
 
N63 Downpipes F10 550i Exhaust

N63 Downpipes F10 550i Exhaust
ARM MOTORSPORTS LIFETIME WARRANTY
Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.

We have a 20-day return policy, which means you have 20 days after receiving your item(s) to request a return. Please note we charge a 25% restocking fee on all returns. To be eligible for a return, your item must be in the same original/new condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at Sales@ColoradoN5X.com. Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at Sales@ColoradoN5X.com. Please inspect your order upon arrival, and contact us immediately if the item is defective, damaged or if you received the wrong item, so that we can evaluate the issue and make it right.

Exceptions/non-returnable items:

Certain items cannot be returned, like sale items, perishable goods, custom products (such as special orders or personalized items), hazardous materials, flammable liquids, and/or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards.

Exchanges:

The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds:

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember, it can take some time for your bank or credit card company to process and post the refund.