Motorcycle Exhaust Fabrication Parts

Motorcycle Exhaust Fabrication Parts

A pre-manufactured exhaust system rarely fits a truly custom build, since routing, stance, and frame layout vary from bike to bike. Building a custom motorcycle exhaust from scratch takes more fabrication skill than most other parts of a build, but it also means the pipe can be routed exactly where the design calls for it.

Tubing, Bends and Flanges

This collection covers 1.75-inch exhaust tubing in straight lengths, U-bends, and 45-degree bends across multiple centerline radius options, so builders can piece together a custom route without a tubing bender. The tubing is 16-gauge (.063-inch) 1008 mild carbon steel, cold rolled and electronically welded, ready for MIG or TIG welding onto the bike. Exhaust flange kits for 1984-2013 Big Twins and 1986-2013 XL models handle the head-pipe connection.

Clamps, Tabs and Mounting Hardware

Fabrication clamps in wide and tapered styles join sections of tubing together, while weld-on universal exhaust mounting slides and mounting tabs give the finished pipe somewhere to mount. For builders who want a head start rather than piecing everything together, a complete DIY 1-3/4-inch builder exhaust kit is available for chopper, bobber, and cafe builds.

Tools and Fitment

Building a full system from these parts still requires basic fabrication tools and a MIG or TIG welder, along with a solid understanding of how the pipes need to route around the frame and engine. Once the tubing is welded, most builds also need exhaust gaskets at the head connection. Check the product listing for exact tubing dimensions and flange fitment before starting a build.