Stainless Bros 4.0in x 1.5D/6in CLR Loose Radius 16 Gauge Pie Cut - 5pk

If you're building a custom exhaust system, especially one with tight bends or unique routing, these pie cut sections from Stainless Bros can be a real help. They're designed to let you form precise curves by cutting a section of tubing into multiple wedge-shaped pieces, or 'pies,' and then welding them back together. This method gives you a lot of control over the bend angle and radius, which is crucial for fitting exhaust components into tight spaces or achieving a specific look.

This particular set features 4-inch diameter tubing with a 1.5-inch deep loose radius and a 6-inch overall length for each pie cut section. They're made from 16-gauge steel, which is a solid thickness for exhaust work – strong enough to hold its shape but still manageable for welding. You get five of these sections in a pack, giving you enough material to create a few bends for your project. Using pie cuts like these is a common technique among fabricators when pre-bent elbows won't quite do the trick.