U-Bend Mild Steel 2.500 x 4in Radius 18 Gauge

The U-Bend Mild Steel 2.500 x 4in Radius 18 Gauge exhaust bend from HEDMAN is a precision mandrel-formed component engineered for custom exhaust system fabrication and repair. This J-style bend accommodates 2.5-inch diameter tubing with a smooth 4-inch radius, making it ideal for builders, fabricators, and automotive enthusiasts who need reliable routing of exhaust piping without kinks or flow restrictions. Whether you're constructing a performance exhaust system, restoring a classic vehicle, or repairing damaged exhaust geometry, this component provides the structural integrity and smooth internal profile required for optimal exhaust flow.

Constructed from 18-gauge mild steel in natural finish, this U-bend features mandrel-bent construction that eliminates wrinkles and maintains consistent wall thickness throughout the 4-inch radius arc. Mandrel bending—a professional fabrication technique—ensures the inner and outer diameters remain true, preserving the internal diameter critical for unobstructed exhaust gas flow and scavenging efficiency. The two 7.5-inch legs provide adequate length for secure welding to adjoining pipe sections, while the 18-gauge thickness (approximately 0.048 inches) balances durability with workability for both TIG and MIG welding applications. At 2.43 lbs, this component is lightweight yet substantial enough to resist vibration-induced cracking in high-temperature exhaust environments.

Custom exhaust fabricators, hot rod builders, and emissions-control system designers rely on HEDMAN bends for their precision and consistent performance across repeated applications. This specific 2.5-inch, 4-inch-radius configuration suits mid-sized engine applications typical in muscle cars, light trucks, and aftermarket exhaust projects. Installation requires basic welding skills; the natural steel finish requires either protective coating or painting to prevent oxidation once installed in the vehicle. Verify tubing diameter and clearance requirements within your exhaust routing path before ordering to ensure proper fit and thermal management.