2-1/2in x .049 Tubing J - Mandrel Bend

The 2-1/2in x .049 Tubing J - Mandrel Bend by Stainless Works is a precision exhaust and intake manifold component designed for serious automotive fabrication and custom exhaust builds. Whether you're constructing a high-performance exhaust system, turbo piping, or custom intake runner tubing, this J-bend mandrel component delivers the structural integrity and flow characteristics critical to engine performance. This tubing serves as a foundation piece for mechanics, fabricators, and enthusiasts building custom headers, runners, or intercooler piping where smooth bends and consistent diameter are non-negotiable.

Mandrel bending is the gold standard in tubing fabrication because it preserves wall thickness and maintains a uniform inside diameter throughout the bend, unlike cheaper tube bending methods that crush or thin the walls. The 2-1/2-inch outer diameter with .049-inch wall thickness provides excellent strength-to-weight balance for high-flow applications while remaining rigid enough for structural demands in engine bay installations. Stainless Works' mandrel bend process creates a consistent radius that minimizes turbulence and pressure loss, critical factors in exhaust scavenging and intake runner velocity—directly impacting horsepower delivery and throttle response on turbocharged, naturally aspirated, and boosted applications alike.

This J-bend tubing fits seamlessly into custom exhaust manifold construction, turbo inlet and outlet piping, and high-flow intake systems across a wide range of engine platforms—from LS and small-block Chevrolet swaps to Ford modular engines and import performance builds. Its 10-inch straight leg and compact 17.5-inch overall length make it ideal for tight engine bay layouts where space is at a premium. Installation requires basic welding skills and access to a mig or tig welder; this component is sold as a raw mandrel bend and integrates with your existing tubing, flanges, and collector assemblies through standard welded joints.