Discover the hidden power of the 340i & 440i with the all-new BMW M Performance Power and Sound Kit! For increased power and a more aggressive sounding and free flowing exhaust!
The kit increases your vehicle’s power by 35 hp to 355hp and 39 lb-ft of torque to 369 lb-ft (355 lb-ft for manual transmission vehicles).
The BMW M Performance Power kit now comes bundled with a higher flowing, valve-controlled exhaust for maximum performance and exhilaration! The BMW M Performance Power Kit features engine tuning software and an electronically controlled valve exhaust system that is actuated in Sport/Sport+ modes via the driving experience control button.
