Shimano Tourney TX800 7/8-Speed Long Cage Rear Bicycle Derailleur Black

Shimano Tourney RD-TX800 Rear DerailleursTX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage Item Specifications Color Silver Largest Cog 34 Chain Wrap Capacity 43 Cage Length Long Drivetrain Speeds 8, 7 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard