Shimano Tourney RD-TX800 8-Speed Rear Derailleur, Silver

The Shimano TX800 Rear Derailleur is the latest in mountain bike derailleurs. Featuring the double servo-pantograph technology that increases durability against weather and oxidation. The maximum teeth for this model is 43. Equipped for 24 speeds, this will help you get to the top of the mountain, and back down with confidence.