Evolution Racewerks Sports Series 4" High Flow Catted Downpipe for N55 Engine

Key Features: Available for the 2012+ BMW 335i (F30 Chassis) N55 Engine! Available for the 2013+ BMW 435i (F32/F33 Chassis) N55 Engine! Available for the 2012+ BMW M135i (F20/F21 Chassis) N55 Engine! High Flow 200 cell metallic catalytic converter  Higher Max Horsepower Power Curve Higher Intial Torque Curve.  Torque curve hits faster, higher, and longer Better throttle response and faster turbo spool up times Mandrel Bent 4" piping.  Smooth transition to the exhaust system 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange Brush Finish (standard) or optional Polish Finish Available with high temperature Black Thermal Coating to reduce underhood temperatures Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug) Optional EGT sensor bung for EGT gauges (comes with pre-installed plug) Compatible with the factory or aftermarket exhaust systems Track tested durability Includes a