Evolution Racewerks Competition Series 4" Catless Downpipe (F30/F32/F33/F20/F21 N55)

Key Features: Available for the 2012+ BMW 335i (F30 Chassis) N55 Engines! Available for the 2013+ BMW 435i (F32/F33 Chassis) N55 Engines! Available for the 2012+ BMW M135i (F20/F21 Chassis) N55 Engine! Higher Max Horsepower Power Curve Higher Intial Torque Curve.  Torque curve hits faster and 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 all hardware for complete installation.