ARM Motorsports S55 Catless Downpipes (M2C/M3/M4)

ARM Motorsports S55 Catless Downpipes (M2C/M3/M4)HIGHLIGHTS Up to +30whp 30wtq Enhanced Exhaust Note 304 Stainless Steel Improved Turbo Spool PROFILE 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. Catless downpipes are considered a standard upgrade for any F80 M3 owner

+ 38% N55LK DS25-250

This allowed us to have an intercooler with more frontal surface area and more direct airflow without having to sacrifice internal airflow with an odd shaped end tank

We’ve seen gains of up to 100whp and 89wtq when tuned on pump gas and up to 177 WHP & 188 WHP gain when paired with the BM3 E30 OTS Map

Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)

causing a Drivetrain Malfunction and throwing your car into limp mode

5″ Performance HD features the highest density fin pack in it’s class

1 year limited warranty on catted

The factory turbocharger turbine housing utilizes a V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel

Constructed from T6061 tig welded aluminum

and therefore preventing detonation

Most tunes require an upgraded downpipe and FMIC to run properly

• ARM 1K FMIC