The Dinan 17-20 BMW 440i Freeflow Axleback Exhaust System is a high-performance upgrade designed to enhance exhaust flow and overall engine efficiency. Constructed with durable materials and featuring a freeflow design, this system reduces back pressure to increase power output and improve throttle response. It delivers a sporty, aggressive exhaust tone that remains civilized during normal driving, while providing a more intoxicating burble and pops under hard acceleration. The incorporation of a Helmholtz chamber design effectively minimizes resonance or drone at low RPM, ensuring a refined sound profile for daily driving and spirited runs alike.
This axleback exhaust system is specifically engineered for 2017 to 2020 BMW 440i models with F33 and F36 chassis, equipped with the N55 engine. It is a direct bolt-on replacement for the factory exhaust, offering an easy installation process. Suitable for street and performance use, this system enhances both sound and performance without requiring extensive modifications. The kit includes the necessary components for a straightforward upgrade, making it an ideal choice for enthusiasts seeking a balance of sporty sound and improved exhaust efficiency.
