Spectre Coupler Elbow Reducer 3in. / 90 Degree w/2.5in. Insert (PVC) - BlackThis Spectre elbow coupler has a 90 degree bend and connects any 3 inch outside diameter component or air intake tube with another 3 inch or 2 1 2 inch outside diameter component or intake tube. The coupler is made from highly durable black PVC and comes with two stainless steel worm gear hose clamps and a 2 1 2 inch removable reducer to adapt one end to a 2 1 2 inch tube. This coupler is a great option where space is limited and an immediate bend