Vibrant 90 Degree Aluminum Piping, 4.5" O.D. - Polished - 2946 Paint & Touch Up you've noticed a curved "bellmouth"

you've noticed a curved "bellmouth" profile at the inlet of each intake runner

18-22 Ford Mustang Ecoboost 2

TIG-welded to a highly efficient bar-and-plate core

For further heat protection

The solution to that problem is polyurethane exhaust hangers and just in case simply stiffening the hanger isn't enough

Vibrant 90 Degree Aluminum Piping, 4.5" O.D. - Polished - 2946 Paint & Touch Up you've noticed a curved "bellmouth"Centerline Radius: 6. 750" Leg Length From Tangent: 4. 000" Wall Thickness: 2. 3mm Vibrant Performance offers a complete range of lightweight, top quality 6061 Aluminum Tubing available in a wide array of sizes ranging from 3 4 to 5" (19mm to 127mm) O. D. Our Aluminum Tubing comes in a variety of bend configurations (30 to 180 degrees) and are suitable for use in both pressurized and naturally aspirated applications. The Vibrant Performance Aluminum