50.0498.80, BMW 1series E81-E82-E87-E88 E82 M Coupe (250kW) 2011-2012, 2nd stainless steel cat replacement pipe group N + Stainless steel centre silencer - to be installed with Ragazzon's rear silencerOversized exhaust pipe diameter. Not compatible with the pipe diameter of the original line. pipe outer diameter 60mm outer outlet diameter 76mm