This one’s simple. For use on small 20″ & 24″ wheeled bikes, Shimano Cues adds a short cage 9/10-speed Shadow derailleur that will still work with up to an 11-39T cassette spread.
If you want to add the new Ultegra RX derailleur to your current setup, you are likely in luck if you have Shimano 11-speed components. It is 11-speed only, but compatible with any of Shimano’s other ...
Can this tiny $30 plastic Cage Guard keep you from destroying a fancy Shimano mountain bike derailleur? MRP thinks so!