340i 440i MIDPIPE UPGRADE inline six The OEM N54 Outlets use

The OEM N54 Outlets use a divorced piping design which separates the two channels of air coming from each turbo

Like the E90

5" size all the way to the turbo

The resonator is designed to attenuate high-frequency and raspy exhaust notes commonly associated with turbocharged BMW engines

340i 440i MIDPIPE UPGRADE inline six The OEM N54 Outlets useHIGHLIGHTS Improved Exhaust Note Lighter Than OEM Maintains OEM Muffler SS304 Stainless Steel Smooth Mandrel Bent Tubing PROFILE The ARM 340i Midpipe significantly improves the sound of your B58, giving it the aggressive exhaust note you're looking for from a tuned B58 powered BMW. Designed to amplify the power and sound of your B58, the ARM 340i Midpipe eliminates the two central resonators found in the stock 340i midpipe. By retaining the OEM