Shimano Tourney RD-TY300, RD-TZ50 Rear Derailleurs
- TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage
- Color: Black
- Largest Cog: 34
- Rear Derailleur Mount Type: 10x1 Standard
- Chain Wrap Capacity (teeth): 43
- Rear Der/Shifter Compatibility: Shimano Mountain
- Cage Length: Long
- Drivetrain Speeds: 6 , 7