3.5 30 Deg Long Radius Elbow

The Boyce 3.5 30 Degree Long Radius Elbow (model LR3530E) is a precision exhaust component engineered for custom exhaust systems where tuning bends and directional control are critical. This steel elbow features a 3.5-inch diameter bore and a 9-inch radius bend, designed to manage exhaust flow with minimal turbulence while accommodating tight installation spaces where standard 45-degree or sharper bends would create excessive backpressure or clearance conflicts.

The 30-degree geometry and extended long-radius curve provide the ideal balance between flow efficiency and compact routing. The 6.875 x 8.375-inch leg dimensions give fabricators flexibility in mounting orientation and integration with intake manifolds, intercoolers, or secondary exhaust passages. Constructed from natural steel, the component is weldable and machineable, allowing seamless integration into custom systems. At 2.81 pounds, it's substantial enough to handle vibration and thermal cycling without flex, yet manageable for installation and repositioning during system assembly.

This bend suits diesel tuning, performance engine builds, and off-road vehicle fabrication where custom exhaust routing is necessary to clear engine bay constraints or accommodate upgraded intake systems. The long-radius design is particularly valuable in applications where reducing exhaust restriction directly improves spool response and overall system efficiency. Whether fabricating a turbo intake runner, intercooler piping, or secondary air passage, the Boyce LR3530E offers the precision geometry and steel durability required for reliable, repeatable results.