BikeOffice App – Find the Right Derailleur Hanger
The Mobile app page connects you to the BikeOffice app for iOS and Android, a dedicated tool for finding the correct derailleur hanger (in Swedish: växelöron) for a bike.

What it does
The derailleur hanger is the small replaceable bracket that connects the rear derailleur to the frame. There are hundreds of shapes, and fitting the wrong one is a common, costly mistake. The BikeOffice app helps you match a bike to its correct hanger.
Why it matters
A mis-ordered hanger means a return, a delay and an unhappy customer. Getting it right the first time keeps repairs moving and stock accurate.
How to use it
- Select Mobile app in your BikeOffice menu (or open the mobile app page).
- Select Download our app to find the right derailleur hanger (iOS) to install the BikeOffice app on an iPhone, iPad or Android phone.
- Open the app and follow its prompts to identify the hanger for the customer's bike.
- For more background and help, select More information on BikeOffice, which opens the BikeOffice website's mobile app page.
Good to know
- The BikeOffice app is available for iOS (iPhone/iPad) and Android.
- For some brands you can also find hanger charts through the supplier — see, for example, the Merida entry in Suppliers, which links to a full derailleur hanger list.
Related
- Product Search — once you know the part, search for it and order.
- Suppliers — brand-specific spare-part and hanger resources.