Downpipe dedicated to the 3.0 engine mounted in: BMW F20 / F21 (135I) BMW F22 (235I) BMW F30-F34 (335I / 435I) Downpipe diameter: 76mm (3 ") Inlet diameter - 74 mm Mounting sheet: V-BAND 3" 77 mmDownpipe by TurboWorks, made of 100% stainless steel. Downpipe decat dedicated to 2.0TFSI engine mounted in: BMW F20 / F21 (135I) BMW F22 (235I) BMW F30-F34 (335I / 435I) Diameter of the downpipe: 76mm (3 ") Outer diameter: V-BAND 3" TurboWorks downpipe, made 100% of stainless steel.Downpipe with silencer for 3.0 engine mounted in: BMW F20 / F21 (135I) BMW F22 (235I) BMW F30-F34 ( 335I / 435I) TurboWorks downpipe is made of 100% stainless steel. Downpipe diameter: 76mm (3 ") Mounting flange: V-BAND 3"