DONGMAO BMW 640640i Gran Coupe N55 F06 3.0T (2012-2017) Valve Control Sport Exhaust System

Overview

2012 BMW 640640i Gran Coupe N55 F06 3.0T built by Dongmao as a direct-fit exhaust system. Every unit is assembled on a platform-specific jig, so flange angles, hanger positions and tip alignment repeat from the first unit of a batch to the last.

Tube work is T304 Stainless with mandrel bends throughout. Welds are back-purged TIG, inside and outside, then checked for penetration before the part moves to finishing. The valve system is cycle-tested before packing.

What is included

• Complete assembly as shown
• Export carton with foam protection