Straight exhaust pipe and tubing is the backbone of any custom exhaust build or repair job, available in both mild steel and stainless steel. Mild steel is the more affordable option but needs paint or coating to resist rust, while stainless steel costs more upfront but holds up far better long-term, especially near the coast. Pair straight pipe with mandrel bends, flanges and clamps to build a complete custom system.

Should I use mild steel or stainless steel exhaust pipe?

Stainless steel resists corrosion far better and is the better long-term investment, particularly in coastal or high-mileage applications. Mild steel is cheaper but will need protective coating and generally has a shorter service life.

What pipe diameter should I use for my exhaust build?

Diameter should be matched to your engine output and the rest of your system – common performance diameters range from 2.25" to 3", with larger turbo diesel builds sometimes running higher. Check your muffler and cat inlet sizes as a guide.

Can straight exhaust pipe be bent on its own?

Straight pipe can be crush-bent with basic tools, but this pinches the pipe and restricts flow. For performance applications, mandrel-bent sections are recommended to keep the internal diameter consistent through the bend.

How do I join two sections of exhaust pipe together?

Sections are typically joined using a lap-joint with an exhaust clamp, or butt-welded together for a permanent, leak-free join. A qualified exhaust fabricator can advise the best method for your build.