• Quad 4 in. Tips
• Mounting Hardware

The Dinan D660-0075-BLK Free Flow Axle-Back Exhaust introduces a new design direction for the G30 M550i. Featuring massive 4 in. clamp-on tips — a first for Dinan — the system offers a bold visual departure from the brand’s traditional welded, thin-wall style. Built from 100% T304 stainless steel, it improves exhaust flow by reducing backpressure while retaining computer-controlled valves for adaptive tone. The result is a deep, aggressive note under load and exceptional quiet inside the cabin during normal driving.

Dinan D660-0075-BLK Free Flow Axle-Back Exhaust Features:

• More Power: +8 HP and +6 ft-lb of Torque
• Drone Abatement Technologies Used to Reduce Cabin Resonance
• Enjoyably Louder, Sportier Sound
• Four Massive 4 in. Diameter Clamp-On, Double-Walled, Polished or Ceramic Black, Laser Engraved Exhaust Tips
• Computer Controlled Exhaust Valves Retained for Adaptive Sound Control
• 100% 304 Stainless Steel Construction
• Easy Bolt-On Installation with Included Mounting Hardware

Emissions Note:

This part is legal for sale or uses on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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