Stainless Bros 3in SS321 90 Deg Mandrel Bend Elbow - 1D Radius 16GA/.065in Wall (Leg)

This 90-degree elbow from Stainless Bros is made from SS321 stainless steel, a material known for its strength and resistance to high temperatures, making it a solid choice for exhaust fabrication. It features a 1D radius, meaning the bend's center line is one times its diameter, which helps maintain smooth airflow without significant restriction. The tubing itself is 16 gauge thick with a .065-inch wall, offering a good balance between durability and ease of welding for custom exhaust projects.

Using mandrel bends like this one is crucial for custom exhaust work because it ensures the tube's diameter stays consistent throughout the bend. Unlike crush bends, which can collapse and choke off exhaust flow, a mandrel bend maintains the full internal diameter. This is important for performance, as it allows exhaust gases to exit the engine more freely, potentially leading to improved engine breathing and a better exhaust note. The SS321 material also offers better corrosion resistance and strength at high heat compared to standard 304 stainless steel.