Will this bolt directly into my exhaust system?

Bolting depends on your current pipe diameter and connection style. This is a 2.5" tube — make sure your existing pipes or flanges match. You may need to weld or clamp-connect depending on your setup.

Can I weld this right out of the box, or does it need cleaning first?

Mandrel-bent stainless ships clean, but a quick wire brush before welding removes any light surface oxidation and gives you the cleanest weld. No special prep needed otherwise.

What makes mandrel bending better than regular bending?

Mandrel bending uses an internal form to support the tube while it bends — the wall stays even and the inside doesn't collapse. Regular bent pipe can kink or flatten at the curve, choking your flow. Mandrel bent keeps your velocity and backpressure consistent.