90 Bend Aluminized 2.5id x 2.5od 4in Radius

The DYNOMAX 90 Bend Aluminized 2.5ID x 2.5OD 4in Radius exhaust bend is a precision-engineered component designed for custom exhaust system fabrication and modification. This 90-degree mandrel bend delivers consistent wall thickness and smooth inner radius, eliminating turbulence and flow restrictions that plague welded or crimped alternatives. Built from 16-gauge aluminized steel, the component resists corrosion while maintaining thermal efficiency in high-temperature exhaust environments.

The 2.5-inch inlet and outlet diameter matches standard aftermarket exhaust piping, enabling seamless integration into dual-exhaust systems, performance headers, and custom muffler applications. The 4-inch radius bend geometry is calculated to minimize backpressure while accommodating typical underbody routing constraints on mid-size vehicles. The aluminized finish—a bonded aluminum-silicon coating—provides superior corrosion resistance compared to bare steel, particularly in climates prone to road salt exposure or high-humidity conditions. At 1.21 pounds, the component adds negligible weight while contributing to a system designed for both flow efficiency and longevity.

This exhaust bend serves fabricators, performance enthusiasts, and shops specializing in custom exhaust design, turbo manifold routing, and downpipe fabrication. It is particularly valuable for builders working on non-turbo-equipped vehicles where standard bend angles or radii don't accommodate engine bay geometry. The mandrel-bent construction ensures structural integrity and consistent flow characteristics across repeated thermal cycling, a critical requirement in high-performance or modified engine applications where exhaust scavenging directly impacts horsepower delivery and fuel efficiency.

DYNOMAX is recognized in the aftermarket exhaust industry for producing mandrel-bent components and complete systems that prioritize flow over cost. This bend component reflects that engineering philosophy, offering the precision needed for serious custom work without the premium price of full exhaust assemblies. Whether building a mild street system or a competition-grade exhaust platform, this component provides the foundation for reliable, efficient exhaust routing.