BMW S55 TURBO BACK EXHAUST SYSTEM30 Day Money Back Guarantee IN STOCK S55 DOWNPIPES The ARM F80 M3 Downpipes are the ultimate solution for improving power, throttle response, and exhaust note on your S55 powered F80 M3. Our goal for the ARM F80 M3 Downpipes was to provide a solution that would maximize power and torque, fit perfectly, and sound extraordinary. Paired with the ARM Catback system, there are three resonators in this system to create the ultimate exhaust note out of your

The pre-catalyst O2 sensor bung is located closer to the turbo on the ARM 6" B58 Downpipe to avoid stretching the O2 sensor wires during installation

Making it capable of supporting even the most demanding big-turbo builds

The ARM S58 Resonated Downpipes are one of

• No Cutting Or Trimming Required

• Increased Airflow

CNC-machined aluminum clamps ensure a secure and pressure tight fit

The ARM N63R Intake is designed to keep the filters as far away from the heat of the turbos as possible

The result of the increased exhaust flow is faster turbo spool

HOW DOES THE PROCESS WORK

if there is any issue with your DME upon hooking it up to our software we will notify you immediately

enough for even the most demanding N55 builds

Each filter provides a total surface area of 68 cubic inches