Dinan Free Flow Axle-Back Exhaust for 2000-2003 BMW M5 E39 - D660-3950

Give your E39 BMW M5 a sportier exhaust note, improved exhaust flow, and classic polished-tip appearance with the Dinan D660-3950 Free Flow Axle-Back Exhaust. Designed specifically for the 2000-2003 BMW M5, this performance exhaust is constructed from T304 stainless steel and uses Dinan Tuned Resonance Chamber Technology to balance increased flow with a more civilized exhaust character. Dinan reports gains of up to 6 HP and 5 lb-ft of torque at 6,500 RPM when paired with applicable software.

The Dinan system is engineered to provide a louder, sportier tone without the excessive cabin resonance associated with some aftermarket exhaust systems. Its stainless steel muffler construction provides corrosion resistance, while polished 3-inch laser-engraved tips add a purposeful but understated appearance. The system uses the factory brackets and hangers for factory-style mounting.

Key Features & Specs:

• Brand: Dinan
• Series: Free Flow
• Product Type: Axle-Back Exhaust
• Part Number: D660-3950
• Fitment: BMW M5
• Chassis: E39
• Material: T304 Stainless Steel
• Body Material: 20-Gauge T304 Stainless Steel
• Pipe Material: T304 Stainless Steel
• System Finish: Brushed
• Tip Finish: Polished Stainless Steel
• Tip Diameter: 3 in
• Tip Branding: Laser-Engraved Dinan Logo
• Maximum HP Gain: +6 HP at 6,500 RPM with applicable software
• Maximum Torque Gain: +5 lb-ft at 6,500 RPM with applicable software
• Peak HP: 402 HP at 6,500 RPM as listed by Dinan
• Peak Torque: 375 lb-ft at 4,500 RPM as listed by Dinan
• Resonance Control: Dinan Tuned Resonance Chamber Technology
• Sound: Louder, sportier exhaust tone
• Drone Control: Designed to reduce unwanted cabin resonance
• Installation: Uses factory brackets and hangers
• Clamps Included: Yes
• Hangers Included: Yes
• Labor Time: 2 hours
• Length: 54 in
• Width: 29 in
• Height: 10 in
• Grade Type: Performance
• Dinan Point Value: 3
• Emission Code: 5
• UPC: 813725021904

Fitment:

• 2000-2003 BMW M5 - E39