BMW N55 Downpipe For 2010-2013 E8x 135i, E9x 335i - ARM Motorsports M440i (G26) For those who are frequently

For those who are frequently in very sandy/dusty environments

engineered to improve airflow by 34

while retaining factory safety systems and without unlocking or flagging the ECU

Power Gains: Increases power by up to 50hp and torque by up to 60 lb-ft depends on fuel

BMW N55 Downpipe For 2010-2013 E8x 135i, E9x 335i - ARM Motorsports M440i (G26) For those who are frequentlyThe ARM E Series N55 Downpipe is engineered to increase power and performance for BMW vehicles equipped with the N55 engine. By optimizing exhaust flow and reducing back pressure, this upgrade allows your turbocharged engine to perform more efficiently. Upgrading the downpipe on your N55 improves turbo response, increases horsepower and torque, and enables Stage 2+ tuning. It also enhances the overall exhaust sound of your 135i or 335i, making it