BigPack BMW F8X M3 M4, Intercooler + Radiators Skin Bend: 60 degree Inner diameter Reference 078121058AM Important information Bend: 60 degree Inner diameter 1 (mm): 60 mm Inner diameter 2 (mm): 63 mm Inner diameter 1 (inch): 2 3 8 inch Inner diameter 2 (inch): 2 1 2 inch Leg length (see picture): 125 mm Color: Blue Wall thickness: 5 mm Temperature range: 40 to +180 degreeC Outer diameter 1: 70 mm Outer diameter 2: 73 mm Reinforcement: 4 layers Material: High quality silicone rubber polyester fabric B200FT B230FT B230GT Significant advantages with do88 BigPack (differs between the configurations): both the ones that goes from the turbochargers to the intercooler and the one that goes from intercooler to throttle body is designed to add durability and at the same time improve air flow