The Shimano RD-TX800 Tourney TX rear derailleur is an essential component for most mountain bikes as well as commuting/hybrid bikes.

 

• TX800 mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice
  
• Oversize 13-tooth tension and guide pulleys to reduce noise and wear
  
• Top normal spring for use with Rapidfire shifters
  
• 8-speed compatible
  
• For use with 28 to 34 tooth low rear sprockets, total capacity 43 teeth
  
• Speed: 7/8 speed
  
• Mount type: bolt on