Takavaihtaja Shimano TOURNEY TX RD-TX800 7/8-speed black

The RD-TX800 rear derailleur for 7/8-speed features Shimano's double servo-pantograph technology that improves adjustability and resists weather and contamination. The derailleur always keeps close to the cassette sprockets, allowing smooth and effortless gear changing. The overall capacity amounts to 43 teeth.