Dinan Free Flow Axle-Back Exhaust System with Polished Tips for BMW M240i (F22/F23) 2017-2021

Special Note: Factory computer-controlled exhaust valve is eliminated.

Dinan's Free Flow Axle-Back Exhaust System for the F22/F23 BMW M240i is engineered to boost performance by optimizing exhaust flow and reducing back pressure, resulting in gains of +6 HP and +5 lb-ft of torque at 6600 RPM. The exhaust system delivers a refined yet sporty sound, remaining civilized during everyday driving but becoming pleasantly aggressive under hard acceleration. It also features intoxicating burbles and pops to enhance the driving experience.

A Helmholtz chamber is integrated into the design to eliminate drone at low RPM, making for a more comfortable cabin experience. Built from 100% 16-gauge 304 stainless steel, the exhaust system is designed to last, resisting corrosion while offering a factory-like fit with the use of existing hangers and brackets. The system's twin 89mm (3.5") polished or ceramic black tips add a tasteful, high-performance aesthetic to the vehicle.

Key Features:

• Power Gains: +6 HP and +5 lb-ft of torque at 6600 RPM
• Helmholtz Chamber: Reduces drone at low RPM for a quieter cabin
• Sound Profile: Louder, sportier sound with additional burbles and pops
• Exhaust Tips: Twin 89mm (3.5") laser-engraved tips in polished or ceramic black finish
• Material: 100% 16-gauge 304 stainless steel for durability and corrosion resistance
• Fitment: Uses factory brackets and hangers for an easy installation
• Exhaust Valve: Eliminates the factory computer-controlled valve for a consistent, sporty exhaust note