About

Fed up with electronic gadgetry and planned obsolescence, we got our start by hacking SRAM AXS derailleurs. We developed rebuild kits, custom tools, and rebuild instructions to fix common issues.

From there, we learned how to build a derailleur that is durable, rebuildable, configurable, and adjustable, which gave birth to our very own Jab derailleur. It works seamlessly on ton of drivetrains, delivers dialed shifting, and keeps your chain calm. Plus, you can re-configure it anytime.

We've tested the heck out of it for 2 years and received The Radavist 2025 derailleur of the year award, and we are just getting started.

Each day, we go to work stoked, constantly finding better ways to rebuild derailleurs and support customers. We make updates easily available to people, and also make them backward compatible so your Jab will be relevant and high performance for years.

How its Made

Parts: Madrone’s small parts are made in Dongguan China at a manufacturer that our founder Aaron has worked with for years on other projects. They have high tech CNC machining capabilities, high quality, and are great people. Check them out here.

Assembly and Shipping: Derailleurs are assembled, inspected, and shipped from the Madrone workshop in Ashland Oregon USA. Here is an article about our workshop. We also rebuild derailleurs at our workshop.