Dinan Free Flow Axle-Back Exhaust – 2008–2011 BMW M3 E90 Sedan | Black Tips

Experience the M3's S65 V8 the way it was meant to sound — without compromising the refinement that made you choose a BMW in the first place. The Dinan Free Flow Axle-Back Exhaust for the E90 M3 Sedan is a single-channel dual exhaust system that is a full 10 lbs lighter than the factory unit, delivering a sporty, engaging exhaust note at wide-open throttle while remaining quiet and civilized at light throttle cruise. This is Dinan's core philosophy in action: Performance Without Sacrifice.

Key Features

• 10 lbs Lighter Than Stock: Single-channel dual exhaust construction is a full 10 lbs lighter than the factory BMW M3 exhaust — meaningful weight reduction on a performance-focused platform
• Performance Without Sacrifice: Sporty and engaging at wide-open throttle — quiet and refined at light throttle cruise. Dinan's exhausts are engineered to enhance the M3 experience without ruining the refined characteristics that define a BMW
• S65 V8 Sound Character: Developed specifically for the E90 M3 Sedan's naturally aspirated S65 4.0L V8 — a sound profile that complements the engine's high-revving character at full throttle without intruding at everyday driving speeds
• Black Tips: Aggressive black exhaust tips for a purposeful, stealthy underbody appearance
• E90 Sedan Specific: Fitment specific to the E90 M3 Sedan body style — for the E92 Coupe or E93 Convertible, see D660-0027
• Dinan Engineering Depth: Dinan is rarely the first to market — because their development process is thorough. Every Dinan exhaust is the result of extensive testing and refinement to ensure it meets the brand's exacting standards for performance and refinement
• Dinan Quality: Manufactured by Dinan — the most recognized name in BMW performance, with decades of engineering expertise on the M3 and broader BMW platform

Specifications

• Type: Axle-Back Exhaust System
• Configuration: Single-Channel Dual Exhaust
• Weight Savings: ~10 lbs vs. OEM
• Tip Finish: Black
• Engine: BMW S65 4.0L V8 (Naturally Aspirated)
• Fitment: 2008–2011 BMW M3 — E90 Sedan only
• Part Number: D660-0028

Note: E90 Sedan fitment only — not compatible with E92 Coupe or E93 Convertible (see D660-0027). Axle-back system — replaces the factory muffler section only. Retains factory mid-pipe and catalytic converters. Professional installation recommended.