Rear Derailleur RD TY21B Six Seven Speed Direct Mount For Mountain Bikes And Commuter Cruisers, Silver Finish, SIS Index Shifting Compatible, Sweet Upgrade For Smooth Shifts On City Rides

Six Seven Speed Direct Mount Rear Derailleur for City Bikes
✔️ 6/7-speed SIS index compatibility, direct-mount design, aluminum alloy

The RD-TY21B-GS rear derailleur is a direct-mount shifting component built for 6- and 7-speed SIS index drivetrains. It's commonly used on mountain, road, commuter, folding, and city bikes, making city rides smoother.

✅ 6-7 speed SIS index shifting compatibility
✅ Direct mount design (not hanger mount)
✅ Aluminum alloy construction for durability
✅ Compatible with mountain, road, commuter, folding, city bikes, and tricycles
✅ Silver finish

💡 What is a direct-mount rear derailleur used for in everyday bikes?

Direct-mount derailleurs attach directly to the frame, simplifying setup and reducing alignment issues. Here are key benefits:

- 6/7-speed SIS index shifting compatibility - Direct-mount design minimizes hanger misalignment - Aluminum alloy body provides durability for daily rides - Fits mountain, road, commuter, folding, and city bikes