Downpipe Kit with 200CPSI Racing catalyst coverter for Mercedes Benz W176 (CL)A 45 AMGmade out of high quality stainless steel 1.4301 (SS304)diameter before and after catalyst Ø76mm200CPSI EU6 Racing Metal Catalytic Converter 100% perfect fit, replace OEMless thermal load on the turbochargermore power by reducing back pressuresignificantly more torqueweight: 7,5kgAttention: Error message in the DME needs to be deleted!