90 Degree Aluminum Bend 4.5in O.D. Polished

The 90 Degree Aluminum Bend 4.5in O.D. Polished from Vibrant Performance is a precision mandrel-bent tube elbow designed for custom exhaust systems, intake manifolds, and turbo piping applications. Built for automotive enthusiasts and professional fabricators who demand smooth airflow transitions without compression or turbulence, this component eliminates the need for welded or crimped bends that compromise flow efficiency. The 4.5-inch outer diameter makes it ideal for high-flow applications in street performance, racing, and restomod builds where every cubic foot per minute counts.

Manufactured from lightweight aluminum alloy, this mandrel-bent elbow maintains consistent wall thickness throughout the 90-degree curve, preventing kinks and ensuring optimal exhaust scavenging or intake charge delivery. The polished finish provides both aesthetic appeal and corrosion resistance, while the smooth internal radius minimizes flow separation and backpressure—critical factors in tuning systems where pressure differential directly affects horsepower and torque output. At 2.95 pounds, the aluminum construction saves significant weight compared to steel alternatives, making it a preferred choice for weight-conscious builds and performance-focused engine bays.

This bend excels in turbocharger intercooler piping, custom headers, and fuel-system applications where precision fitment and durability matter. Mechanics and fabricators rely on Vibrant Performance mandrel bends for TIG welding into custom systems or as drop-in replacements in bolt-together kits. The 4.5-inch O.D. accommodates standard automotive tubing sizes and integrates seamlessly into modular exhaust and intake designs, making it versatile across domestic and import platforms from V8 muscle cars to turbocharged four-cylinder builds. Measure twice and verify your existing tube diameter before ordering to ensure proper coupling fit and a leak-free installation.