Shimano, Rear Derailleur, Rd-Tx800, Tourney Tx,7/8-Speed, Direct Attachment Type, Black

The Shimano Tourney RD-TX800 is an 8-speed rear derailleur built for reliable, low-maintenance shifting on entry-level and commuter bikes. Its double servo-panta mechanism keeps the guide pulley tracking closely with the cogs for accurate SIS indexed shifting, and it's compatible with HYPERGLIDE cassettes for smooth gear changes. Available in black, it offers a 13T/13T pulley setup with 43T total capacity.