Description This exhaust piping kit is designed for BMW E90, E91, E92, and E93 models with the N54 3" twin-turbo charge engine. It is made with high-quality 304 stainless steel, providing maximum strength and durability.  This kit is perfect for BMW enthusiasts who want to upgrade their car's exhaust system to improve its sound and performance. Features Tube Inlet Diameter: 3" V-Band Inlet Tube Outlet Diameter: 2.5" Flange Outlet This turbo downpipe is made of stainless ( SS304 TOP QUALITY ) with a 3" V-band. Includes race cat delete rear section (can be replaced with catalytic converter module) which bolts directly to the stock exhaust. All CNC mandrel bent and CNC flanges uses TIG welded assembly. Fitment 2007-2010 E90/E91/E92/E93 BMW 335i N54 (except 2009 BMW 335i Base Coupe 2-Door 3.0L) 2011–2013 E92 BMW 335is N54 2008-2010 E82/E88 BMW 135i (N54 only) Running with 3.0L I6 (N54) engine(3.0L Turbocharged Engines Only) Fits both RHD and LHD (DOES NOT fit XI models) Fits All 335i Coupes, Convertibles and Sedans. Will NOT Fit AWD Model