Amazon.com: FGJQEFG 4 Inch 180 Degree DIY Custom Mandrel Exhaust Pipe Tube Pipe, T304 Stainless Steel, Universal Fit, 28 Inch End to End Length, 4'' OD Mandrel Bend Pipe 2PCS : Automotive
Stainless Works MBJ250-H Stainless Works Individual Mandrel Bends | Summit Racing
304 Stainless Steel 4" 90 Degree Mandrel Bend - XFORCE USA
BESTfit 4 Inch Aluminized Multi-Bend Exhaust Pipe For International - 4 State Trucks
Vibrant 3.00" 16ga 90° Oval (Horizontal) Mandrel Bend 304 Stainless 13191– Ace Race Parts