ARM 3" Catless Downpipes for BMW 750i/M850i/X5/X6/X7 (N63R/N63B)

Overview

ARM Motorsports' N63R/N63B downpipes for the 4.4L V8 Twin-Turbo powered G-Series allows you to take your BMW to the next level. Made with full 304 Stainless Steel and 3" construction these downpipes open up an incredible sound from the twin turbocharged V8 even with the stock exhaust!

By replacing the OEM downpipes with the ARM G-Series 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 BMW.

Details

Highlights

• Improved Turbo Spool
• Enhanced Exhaust Note
• Fully Reversible

Construction

• Mounts to turbos and midpipes with the same precision as you would expect from the factory N63R/N63B downpipes
• Two O2 sensor bungs on each downpipe to allow for reinstalling the O2 sensors in their factory locations

What's in the Box

• ARM G-Series 3" Catless Downpipes
• ARM Crush Brackets
• Hardware Kit
• These downpipes will not fit EU Emissions vehicles with the OPF Filter

Warranty & Off-Road Use

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. 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.

Fitment

Watch: Video 1, Video 2