DINAN FREE FLOW AXLE-BACK EXHAUST - 2020-2024 BMW M340I/M440I

• More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
• Enjoyably louder, sportier sound
• Quad 4" diameter clamp-on, double-walled, ceramic black and laser engraved exhaust tips
• 100% 304 stainless steel construction
• Larger diameter piping for increased flow (76mm vs 70mm)
• 4 lbs lighter than the stock system
• Stock exhaust valve actuator reused and another valve/actuator added to the opposing side promoting even flow regardless of valve position
• Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions
• Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
• Easy bolt-on installation with included mounting hardware

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