Rear Derailleur RD-TZ31-A For 6/7 Speed Mountain Bikes, Direct Mount or Hanger Mount, Durable Aluminum Alloy, GS SIS Index Shifting Compatible, 34T Total Capacity, 28T Largest Sprocket
✔️ 6/7 speed compatibility, GS SIS index shifting, 34T total capacity
Designed for 6/7 speed drivetrains, this rear derailleur is built from durable aluminum alloy and plastic blend to deliver reliable shifting on mountain, road, and folding bikes.
✅ Compatibility: GS 6/7 speed SIS Index Shifting
✅ Total capacity: 34T; largest 28T; smallest 14T
✅ Mount options: direct mount or hanger mount
✅ Material: aluminum alloy for durability
✅ Includes: 1 rear derailleur and 1 supporting bolt
💡 What is a rear derailleur used for on 6/7 speed bikes with GS SIS indexing? It helps shift the chain to different rear sprockets, keeping tension and aligning with indexed shifting for smooth gear changes. - Compatibility: GS SIS 6/7 speed - Capacity: 34T total, largest 28T, smallest 14T - Mount: direct mount or hanger mount - Material: aluminum alloy