Amazon.com: AC PERFORMANCE OD 1.75" (45mm), Leg Length 4" (100mm), 90 Degree Bend Elbow 1.75 Inch 6061 Aluminum Pipe Tube Intercooler Pipe High Class Brushed Treatment Tight Radius Air Intake Tube :
Marine grade anodized aluminum pipe with 90 degree bend.
Amazon.com: AC PERFORMANCE OD 3" (76mm), 90 Degree Bend Elbow 3 Inch Aluminum Pipe Tube, Intercooler Pipe High Class Brushed Treatment Tight Radius Air Intake Tube : Industrial & Scientific
Aluminum 90 degree Elbow with 1/8" Internal Radius