F8X S55 Catted Downpipes30 Day Money Back Guarantee IN STOCK HIGHLIGHTS Up to +30whp 30wtq Enhanced Exhaust Note 304 Stainless Steel Improved Turbo Spool PROFILE The ARM F8X S55 Catted Downpipes are the ultimate solution for improving power, throttle response, and exhaust note on your S55 powered F8X. Our goal for the ARM F8X Catted Downpipes was to provide a solution that would maximize power and torque, fit perfectly, and sound extraordinary. The ARM S55 Catted downpipes

it's designed with performance in mind be placing it directly in the path of fresh airflow

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

Towards the rear section of the ARM 335i 3

On some A8's and S8's the midpipes connect further towards the rear of the vehicle

0T Inlets will eliminate any restriction of the induction on your 4

smoother exhaust note

With it's full 4

• Constant Tension T-Bolt Clamps

increasing power and torque throughout the RPM range of your M550i

the ARM N63 Midpipes are the perfect solution

Upgrading the charge pipe on your B58 is one of the basic steps in ensuring your B58 is protected against a charge pipe failure

0T Catted Downpipes utilize the OEM transmission mounting brackets to further secure them in place during aggressive driving