Free up the BMW's N54 engine with COBB 3" Downpipes! A direct replacement for the factory downpipes, COBB’s feature 200 cell high flow catalytic converters and 304 stainless steel tubing. Custom cast bell mouths ensure perfect OEM-like fitment. These features combine to provide a free flowing exhaust outlet for high energy exhaust gases to reduce back pressure and increase turbo efficiency. Off-the-shelf mapping available for the Accessport.
-CAD Designed Cast Turbo Outlets for Maximum Flow
-Dual 200 Cell High Flow Catalytic Converters
-3" 304 Stainless Steel Construction
-Works with Stock or COBB Cat-back
-Compatible with COBB Accessport OTS Maps