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The Vibrant 12613 4″ Aluminized U-J Mandrel Bent Tubing is the perfect option for building your custom exhaust system, downpipe, intake components or intercooler tubes. This 4″ mandrel bent tube is constructed of aluminized steel and features a 6 month warranty.

Vibrant’s unique U-J Mandrel Bent Tubing combines a 180 degree bend and a 45 degree bend into one integral unit to give fabricators the ability to get up to 3 seperate bends and a substantial straight length from each piece. Aluminized Mild Steel is a superior grade of Mild Steel. To be classified as Aluminized Steel, cold rolled metal sheet is hot-dip coated with an aluminum-silicon alloy. This process allows the steel to be far more resistant to corrosion and heat than normal mild steel.


  • Aluminized Steel
  • 180 & 45 Degree Bend
  • 4″ Smooth Mandrel Bends

12613 U-J Bend Specifications:
Tube Diameter: 4″ O.D.
U-Bend Centerline Radius: 6″
Approx. Leg Length: 12″
Tube Thickness: 0.065″ (1.65mm)


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