Shimano Tourney RD-TY300, RD-TZ50 Rear Derailleurs

• TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage
• Rear Derailleur Mount Type: 10×1 Standard
• Rear Der/Shifter Compatibility: Shimano Mountain
• Cage Length: Long
• Drivetrain Speeds: 6
• Drivetrain Speeds: 7
• Color: Black
• keyword search: Replaces RD8163
• Chain Wrap Capacity (teeth): 43
• Largest Cog: 34