VRSF Sports Cat N55 Downpipe (F2X/F3X M135i/M235i/335i/435i, F87 M2)

 The VRSF N55 High Flow Catted Downpipe enhances exhaust flow by replacing the restrictive factory catalytic converter and enhances the sound of your vehicle. It's an excellent upgrade for unleashing the full potential of the N55 engine in your F2X M135i/M235i, F3X 335i/435i, or F87 M2. Note that a tune will be required to adjust fueling and prevent an EML light from appearing.

These downpipes are designed to bolt directly to the OEM exhaust system using factory mounting points. You can choose between a 3.5″ version for PWG (pneumatic wastegate, pre-07/13) and a 4″ version for EWG (electronic wastegate, 08/13 onwards). A catless version is also available.

Key features include:

• Hand-crafted, TIG-welded 4.5″ 304-grade stainless steel construction
• 200-cell sports cat for optimized flow
• Compatibility with both LHD and RHD models without additional modifications
• Smooth radius bends to minimize turbulence and maximize flow
• Direct fitment with both stock and aftermarket exhaust systems
• Backed by a VRSF 1-year warranty