M3 Designed Rear Bumper E90 Edition Style:Quad Exhaust Cutout or has a bad gasket

or has a bad gasket

The O2 sensor bungs are located higher up on the ARM downpipe to avoid stretching the O2 sensor wires during installation

The ARM N55 Downpipe starts with a 4" diameter at the precision CNC machined turbo v-band connection and gradually reduces to a flared joint to optimize exhaust flow while matching up to the stock midpipe v-band connection perfectly

Front Lip Compatibility: 2008-2013 E90/E92/E93 M3

Additional items:  fog light grilles

M3 Designed Rear Bumper E90 Edition Style:Quad Exhaust Cutout or has a bad gasketDescription Rear Bumper compatibility: 2005 2011 E90 3 Series Pre LCI & LCI Sedan Additional items: tow hook cover & lower diffuser Build Material: polypropylene Variations: Single Exhaust Cutout Quad Exhaust Cutout