Wake up your N55 with the OneFastShop 3.5 inch catless downpipe. Designed for the big body BMW N55 PWG platform (F10 535i, F07 GT, F12/F13 640i, F06 Gran Coupe, F01 740i, E70 X5, and E71 X6) from 2009 to 2014, this is the biggest bang for buck mod available. Stripping out the factory cat unlocks real power, sharper throttle response, and the aggressive growl your N55 was built to make.
Real World Performance Gains:
- +25 to +30 horsepower with proper tuning
- Even more power on upgraded turbo setups
- Significantly faster turbo spool and quicker throttle response
- Deeper, more aggressive exhaust note from the turbo outlet back
- Stage 2+ tune ready, supports bigger power builds
Features:
- Full 3.5 inch diameter mandrel bent tubing
- 304 grade stainless steel construction
- CNC machined billet flanges
- Hand TIG welded joints
- Welded mounting bracket included
- Lifetime warranty on defects
- LHD and RHD compatibility
- Compatible with OEM and aftermarket cat back exhausts
- Direct bolt on installation, no cutting required
Technical Specs:
- Diameter: 3.5 inch (full diameter maintained from turbo outlet)
- Material: 304 grade stainless steel
- Tubing: Mandrel bent
- Flanges: CNC machined billet
- Welding: Hand TIG welded
- Mounting: Welded bracket included
- Configuration: Race configuration, catalytic converter removed
- Engine: BMW N55 PWG (big body chassis only)
Contents:
- 1 N55 3.5 inch catless downpipe
Gasket required for installation: A turbo to downpipe gasket is required to seal this downpipe to your factory turbo. Our 3.5 Inch Turbo to Downpipe Gasket for BMW N55 is available separately, add it to your order from our store.
Vehicle Fitment:
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 2011-2013 | BMW | 5 Series | 535i / 535i xDrive (F10) | N55 PWG |
| 2010-2014 | BMW | 5 Series GT | 535i GT / 535i xDrive GT (F07) | N55 PWG |
| 2012-2014 | BMW | 6 Series | 640i / 640i xDrive Coupe (F13) | N55 PWG |
| 2012-2014 | BMW | 6 Series | 640i / 640i xDrive Convertible (F12) | N55 PWG |
| 2013-2014 | BMW | 6 Series | 640i / 640i xDrive Gran Coupe (F06) | N55 PWG |
| 2011-2014 | BMW | 7 Series | 740i / 740Li / 740Li xDrive (F01/F02) | N55 PWG |
| 2011-2013 | BMW | X5 | xDrive35i (E70) | N55 PWG |
| 2011-2014 | BMW | X6 | xDrive35i (E71) | N55 PWG |
Wastegate Identification:
This downpipe is for N55 engines with the pneumatic wastegate (PWG) turbo only. PWG turbos use a vacuum line and diaphragm to control wastegate position. Big body N55 vehicles in the years listed above were equipped with PWG turbos. If you have a later N55 with the electronic wastegate (EWG), this downpipe is not compatible.
Important Note:
This product is intended for off-road and track use only. It is not legal for use on public roads and may not comply with emissions regulations. Check local laws before installation.
