4In O.D. Tight Radius 180 Degree U-Bend

The 4In O.D. Tight Radius 180 Degree U-Bend by Vibrant Performance is a mandrel-bent exhaust component engineered for custom exhaust system fabrication and modification. This U-bend is designed for builders and fabricators who demand precision fitment and smooth airflow characteristics in performance exhaust applications. Whether you're constructing a street rod exhaust, tuning a race vehicle, or restoring a classic with modern performance upgrades, this component provides the tight radius geometry required to navigate complex engine bay layouts without compromising flow dynamics.

Constructed from 16-gauge stainless steel, this mandrel-bent U-bend features a 4-inch outer diameter with a 6-inch bend radius and 8-inch legs, allowing tight installation angles while maintaining structural integrity and corrosion resistance. The mandrel-bending process ensures the tube wall thickness remains consistent throughout the bend, preventing the collapse or kinking that occurs with cheaper tube-bending methods. Stainless steel construction provides superior durability against exhaust heat cycling and corrosive environments, making it suitable for both street and competition applications where long-term reliability is non-negotiable.

This component is ideal for custom fabricators, automotive restoration shops, performance tuners, and serious enthusiasts assembling bespoke exhaust systems. The tight 180-degree radius is particularly valuable in space-constrained engine bays where standard bends create installation conflicts or require excessive clearance modifications. Installation requires basic welding equipment and experience; proper TIG welding with stainless rod is recommended to maintain material integrity and prevent corrosion at joints. Weighing 8.55 lbs and measuring 15.5 x 4 x 16.5 inches, it integrates seamlessly with standard 4-inch diameter tubing and flanges commonly used in custom exhaust fabrication.