Deciding to Rebuild
Why is my derailleur shifting poorly?
Derailleurs often go out of adjustment, develop play in the pivots, and bend easily. Often some basic maintenance and re-adjustment will solve the issue.
But if not, Madrone offers some great products to get it back to full shifting performance.
Why rebuild?
- Upgrade. Madrone's parts are made of high quality materials to tight tolerances, and improve the durability of SRAM derailleurs. Not to mention, they look awesome too!
- Give an old drivetrain a new life. Tired of chasing the latest tech? Refresh your derailleur and keep your prior generation drivetrain running longer. Die hard 11 speed enthusiasts rejoice! Our cable actuated parts fit SRAM 11 speed derailleurs.
- Save on costs. Our parts for SRAM AXS derailleurs are much cheaper than buying a new derailleur.
- Environmental responsibility. Aside from engineered plastics ending up in a landfill, e-waste is a major environmental concern. We are passionate about keeping parts in service rather than in landfills, and our repair kits allow you to do that easily. Our products are designed to restore and improve the performance of your derailleur, giving it new life.
Is my derailleur a good candidate for a rebuild?
If its generally functioning, but not shifting well, it is a perfect candidate. Some people rebuild new units for the upgrade too. Destroyed derailleurs are not good candidates, because there can be damaged parts that are not replaceable. This page explains which parts are replaceable and which ones are not.
The most important stock part for AXS derailleurs is the mounting bracket. You can use the visual guide below to assess your mount. Focus on the area indicated to assess how much impact force the mount has been subjected to. If it is bent, do not rebuild the derailleur. For more details, refer to this page.
My derailleur was damaged in a big crash or was wrapped into the rear wheel - is it rebuildable?
Those are often not worth rebuilding because the mount could be bent. It depends on which parts were damaged. Please refer to this page to assess whether it makes sense to rebuild a severely damaged one.
Which parts should I replace?
For SRAM derailleurs, we have a guide on which parts to replace, and which parts cannot be replaced here.
Which parts are compatible with my derailleur?
We offer products for SRAM AXS Eagle derailleurs, and SRAM Cable Actuated (Eagle 12 speed and 11 speed).
We do not have products for SRAM road derailleurs, SRAM Transmission derailleurs, or Shimano derailleurs.
Detailed compatibility info is listed on each product page.
Should I rebuild it?
If you derive satisfaction repairing things, dialing in your bike, or working with your hands, this is a great option! Rebuilding a derailleur is a detail-oriented process, and our parts, tools, and videos are designed to make the rebuild as smooth as possible. Our Support Center provides all the guides, tips, and tricks to help make it as easy as possible.
The first rebuild can take 1-2 hours to rebuild a derailleur for the first time, so we recommend to be patient and take the time to do it slowly and carefully. Tips for a successful rebuild are here. After a few rebuilds it will get much easier and faster as you memorize the steps and techniques. Experienced rebuilders can do a complete rebuild in under 30 minutes.
How do I get started?
Please read this page first on Which Parts to Replace, and then check out our Products.