ARM Motorsports BMW F-Series N63/N63TU 3" Catless Downpipes – 550i/650i/750i

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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. In addition to the power gains, these downpipes open up an incredible exhaust sound from the turbocharged V8 that will shock and awe onlookers!

DYNO PROVEN

After installing the ARM 3" Downpipes and Cold Air Intake, we recorded gains of 48whp and 43wtq over the standard Stage 2 tune for a total of 460awhp and 525awtq.

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 turbochargers down to the mid pipe section. 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.

SOUND CLIPS

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.

ARM MOTORSPORTS LIFETIME WARRANTY

Backed by the ARM Motorsports Lifetime Warranty against defects in craftsmanship or fitment. See the full terms for details.

Off-road use only: This product is intended for racing vehicles and may be illegal for use on public roads in many states or provinces.