DINAN High Flow Middle Exhaust - BMW M3/M4 (21-24)

DINAN High Flow Middle Exhaust – BMW M3 / M4 (2021–2024)

Looking to elevate the exhaust tone of your G8X M3/M4 without a full system upgrade? The DINAN High Flow Middle Exhaust delivers a deeper, louder, and smoother exhaust note while maintaining the factory rear muffler — offering the perfect balance between performance and value.

This centre section replaces the restrictive factory mid-pipe and resonators with a precision-engineered 3" (76 mm) T304 stainless steel system featuring a hand-crafted mandrel-bent X-pipe. The result is a refined yet aggressive exhaust character, reduced weight, and improved flow efficiency.

When paired with the optional DINAN Axle-Back Exhaust, the combination produces an unmistakable growl with perfect tonal balance — bold, yet sophisticated — worthy of the M badge.

Performance Benefits:

• Enhanced Sound: Louder, smoother, and more aggressive tone compared to stock

• Increased Flow: 76 mm (3") tubing replaces the restrictive 70 mm (2.75") factory section

• Weight Reduction: 5 lb lighter than OEM (17 lb vs 22 lb)

• Improved Resonance: Mandrel-bent X-pipe balances exhaust pulses for even tone

• Deletes Factory Resonators: For increased volume and sharper sound response

• Modular Design: Works independently or pairs seamlessly with the DINAN Axle-Back system

Technical Features:

• 100% T304 stainless steel construction for corrosion resistance and longevity

• Hand-crafted X-pipe with smooth internal geometry for optimal flow

• Factory-like fitment with included mounting hardware

• Bolt-on installation—no cutting or welding required

• Designed, tested, and built in the USA

Vehicle Compatibility:

• BMW G80 M3 – 2021+

• BMW G82 / G83 M4 – 2021+

SKU: D660-0094