The Dinan D660-0057 Mid-Pipe replaces the factory resonated center section on F30 340i and F32 440i models with straight 3.25 in. (82.6 mm) T304 stainless tubing. Deleting both resonators and enlarging the diameter improves flow, removes restriction, and produces a louder, fuller exhaust note while trimming 3 lb of weight. The assembly bolts in with the supplied hardware and mates to the stock or Dinan rear section.

Dinan D660-0057 Mid-Pipe Features:

• Deletes both resonators for increased volume
• 3.25 in. mandrel-bent T304 stainless tubing
• Replaces stock 80 mm hydro-formed pipe
• Weight drops to 21 lb (stock 24 lb)
• Bolt-on installation; hardware included

Emissions Note:

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART