Shimano TY21B Bracket Mount Rear Derailleur
![Shimano TY21B Bracket Mount Rear Derailleur](http://static.hswhite.co.nz/images/products/450/shimano-ty21b-bracket-mount-rear-derailleur.jpg)
![Shimano TY21B Bracket Mount Rear Derailleur](http://static.hswhite.co.nz/images/products/shimano-ty21b-bracket-mount-rear-derailleur.jpg)
The Shimano TY21B is compatible with 6-speed SIS Index Shifting drivetrains, and has a cage length of 75mm.
FEATURES
- Model RD-TY21B
- 6 Speed
- SIS Index shifting
- Black
- Bracket mounting
- Cage length 75mm