B-Spec 41mm 2011- 2013 Mini Cooper Restrictor Plate Kit. Kit includes the restrictor plate, spacer, and two gaskets. The reason for the spacer and second gasket it to keep the butterfly away from the restrictor hole and it getting jammed open. The order for assembly is, intake with factory gasket, restrictor, gasket, spacer, gasket, throttlebody, install screws and tighten everything down. Shipping Included, please send me your FULL SHIPPING ADDRESS.