Dinan 3in High Flow Middle Exhaust - BMW M550i xDrive (G30) 2018-2023

The Dinan High Flow Middle Exhaust replaces the hydroformed factory center section, including the resonator, with larger 3in (76mm) T304 stainless steel tubing for freer flow versus the 70mm stock piping. In place of the resonator, a mandrel-bent X-pipe crossover promotes even flow to both banks of tips and removes the uneven-flow harshness of the stock system. Deleting the resonator adds volume, producing a louder, smoother, fuller exhaust note. Installation is bolt-on using the included mounting hardware.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy