Dinan Free Flow Axle-Back Exhaust for 2018-2023 BMW M550i xDrive - D660-0075-BLK

Give your G30 BMW M550i xDrive a deeper, sportier exhaust note while retaining factory-controlled valve operation with the Dinan D660-0075-BLK Free Flow Axle-Back Exhaust. Designed for 2018-2023 BMW M550i xDrive models, this performance exhaust is constructed from T304 stainless steel and features four massive 4-inch black ceramic coated, double-wall clamp-on tips. Dinan reports gains of up to 8 HP and 6 lb-ft of torque at 6,600 RPM while engineering the system to improve exhaust flow and reduce backpressure.

The Dinan Free Flow system retains the factory computer-controlled exhaust valves, allowing quieter operation during low-speed driving and increased flow and sound under high-load conditions. Internal drone-abatement technology helps reduce unwanted low-RPM cabin resonance while preserving a deeper, more aggressive V8 exhaust note when desired. The clamp-on tip design also allows the exhaust tips to be removed or replaced more easily than traditional welded-tip configurations.

Key Features & Specs:

• Brand: Dinan
• Series: Free Flow
• Product Type: Axle-Back Exhaust
• Part Number: D660-0075-BLK
• Fitment: BMW M550i xDrive
• Chassis: G30
• Material: T304 Stainless Steel
• Body Material: T304 Stainless Steel
• Pipe Material: T304 Stainless Steel
• System Finish: Brushed
• Tip Finish: Black Ceramic Coated
• Exhaust Tip Quantity: 4
• Tip Diameter: 4 in
• Tip Style: Double-Walled, Clamp-On
• Tip Branding: Laser-Engraved Dinan Logo
• Maximum HP Gain: +8 HP at 6,600 RPM
• Maximum Torque Gain: +6 lb-ft at 6,600 RPM
• Exhaust Valves: Factory computer-controlled valves retained
• Valve Operation: Quieter during low-speed driving and fully open under high-load conditions
• Sound: Louder, deeper, sportier exhaust tone
• Drone Control: Drone-abatement technology designed to reduce low-RPM cabin resonance
• Installation: Easy bolt-on installation
• Mounting Hardware: Included
• Clamps Included: Yes
• Hangers Included: Yes
• Labor Time: 1.9 hours
• Length: 66 in
• Width: 30 in
• Height: 16 in
• Weight: 73 lb
• Grade Type: Performance
• Dinan Point Value: 3
• Emission Code: 5
• UPC: 813725024660

Fitment:

• 2018-2023 BMW M550i xDrive - G30