Upgrade your BMW's performance with COBB BMW N54 Turboback Exhaust System. 5B2302 Fits BMWs equipped with the N54 Engine.
The best way to free up some horsepower in your force inducted vehicle is by letting the turbo breathe. COBB's 3" catted downpipes are a direct replacement for factory downpipes and feature a 200 cell high flow catalytic converter and 304 stainless steel tubing. These downpipes provide a free flowing exhaust out for the high energy exhaust gasses which reduces back pressure and increases turbo efficiency. There is off-the-shelf mapping available for the Accessport to take full advantage of these downpipes.
Catted Downpipe Features
- 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
The COBB Upgraded Cat-back system is made up of 2.5" and 3" 3014 Stainless Steel pipes and gives your BMW a deeper more throatier sound during WOT and cruising.
Cat-back System Features
- 2.5" & 3" 304 Stainless Steel Construction
- CNC Mandrel Bent Tubing with TIG Welds
- V-Band Clamp Connections for Infinite Adjustability
- 4" Slip Fit Tips In Order to Customize Tip Placement
- Helmholtz Chamber to Reduce Resonance
**Note: Fitment of downpipes is for left-hand drive vehicles only.
- 2011-2013 BMW 335is
- 2007-2010 BMW 335i