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• Improved Turbo Spool
• Enhanced Exhaust Note
• Fully Reversible
PROFILEARM 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 PROVENOur 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.
CONSTRUCTIONAs 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.
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.
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
IN THE BOX
• ARM N63 3" Catless Downpipes
• ARM Crush Brackets
• Hardware Kit
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.
|BMW||F01||750i xDrive||N63/TU 4.4L|
|BMW||F01||Alpina B7||N63/TU 4.4L|
|BMW||F02||750Li xDrive||N63/TU 4.4L|
|BMW||F06||650i xDrive||N63/TU 4.4L|
|BMW||F06||Alpina B6 xDrive||N63/TU 4.4L|
|BMW||F07||550i xDrive||N63/TU 4.4L|
|BMW||F10||550i xDrive||N63/TU 4.4L|
ARM MOTORSPORTS LIFETIME WARRANTY
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
Tracking will be sent once it leaves our warehouse.
For Canadian shipments, if the item is at a US address, the item needs to be brought into our Winnipeg warranty prior to shipping out to the destination.
Tracking information will be received once it leaves Winnipeg.
Please note, average turn around time for this is roughly 2 weeks, if the product is in stock.
Absolutely NO refunds/exchanges on special order items. If return of a non special order item is requested, customer must pay shipping and it must be requested within 14 days of purchase.
Any orders not picked up by the customer within 15 days after notification of arrival becomes property of OSS Motorsport Ltd. no credit or refund will be given.
Customers that remove product(s) from OSS Motorsport will have been deemed to agree with all of the above terms and conditions. All items sold are for Off Road Use Only.
Unwanted items are subject to a 20% restocking fee, in addition to the return shipping to our warehouse(if applicable). Used items cannot be returned.
All Electronics are final sale!
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Shipments, returns & refund
During the payment process, we provide delivery options with different delivery companies with which we have no contractual relationship. We offer commission free this added service so the client can receive its order without having to round trip to our warehouse. If there is any problem with the delivery, it is the consignee responsibility to contact the delivery company he/she dealt with directly. The carrier provide a limited insurance of 100$. If you need more, please contact us prior to purchase as we will get you the quotation for extra insurance from the carrier you will select.
NO return accepted. Exchange upon approval and proof of factory default.
Partial or full refund requests are subject to 5% administrative fees. Refund is immediately issued upon cancellation and a confirmation email is sent. However, depending on the payment method used, it may take one (1) to ten (10) days for the refund to appear in client account.
Special orders are non-refundable.
United States orders may be subject to Custom fees and tax as we ship from Canada.
Some products may be used for off-road only. Customer is responsible to check with his/her local/state laws and ordinances.
We are not responsible if the client ordered the wrong item, which does not work on its vehicle.
All parts required professional installation, there is no return or exchange if the client does not know how to install it him/herself.
OSS Motorsport is not responsible for defective or damage caused by unprofessional installation or misuse of the product.
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