ID of inlet is 57mm (your pipe OD should be 2.25). Complete Kit - All Required Parts for easy installation included. The sound of the turbo spooling and blow off valve is amplified with these open filters.This intake system completely replaces your restrictive factory air box assembly. 2011 E82 1M Twin Turbo 3.0L. Leave us your Tel no after paid if you did not left in the registeration form. We reserved the right to reject any return or exchanges.
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