DIY Mandrel Exhaust Kits

All of our Builder Kits are carefully designed for maximum convenience and accuracy, ensuring you have the right materials, bends, and components needed to complete your project efficiently. Each kit is engineered to help fabricators, performance shops, and DIY builders save time and reduce waste—so you can focus on building, not sourcing parts.

We take pride in using only 100% U.S.-made materials, sourced from our trusted American suppliers to guarantee superior quality, consistency, and performance in every kit. Whether you’re fabricating a custom exhaust system or working on a performance upgrade, our builder kits deliver the precision and reliability your build deserves.