Ticon Industries 4in Diameter 1.37D Loose Radius 1.2mm/.047in Polished Titanium Pie Cut - 5pk

If you're building a custom exhaust system and need to make tight, precise bends, these Ticon Industries pie cuts are what you'll want. They're made from titanium, which is a strong but lightweight material that's great for exhaust work because it resists corrosion and heat. Each piece is a segment of a larger radius, so when you cut and weld them together, you can form a smooth, continuous curve in your tubing.

This particular set gives you a 4-inch diameter tube with a 1.37D loose radius, meaning it's a segment of a larger circle. The wall thickness is 1.2mm or about .047 inches, which is a good balance for fabrication without being too thin to handle. The polished finish means they look clean right out of the box, ready for welding. You get five of these pie cuts in a pack, giving you enough material to form a decent section of bent tubing for your custom project.