Tourney RD TY300 6 And 7 Speed Rear Derailleur Long Cage With Hanger Mount For Mountain Bike Road Bike Hybrid Bike Trail Bike Snowmobile Plug And Play Install And Smooth Shifting

6/7-Speed Rear Derailleur for MTB, Road & Hybrid Bikes
✔️ Long cage RD-TY300-SGS, 43T total capacity, 6/7 speed, pack 1

RD-TY300-SGS is a long cage 6/7-speed rear derailleur designed for a wide range of bikes, including mountain, road, hybrid and folding bikes. It delivers smooth shifting and easy installation for secure, reliable performance.

✅ Model: RD-TY300-SGS
✅ Speed compatibility: 6/7 speed SIS INDEX
✅ Cage: Long cage, aluminum alloy for strength
✅ Total capacity: 43T; pulley 13/13T
✅ Gear ranges: low 28-34T; top 11-14T
✅ カラー：ブラック

💡 What is a rear derailleur used for in a bicycle drivetrain and how does a 6/7 speed unit work?

Here's a handy, quick explanation for common bike setups. - Shifts the chain across the cassette to change gears on a bike
- Keeps chain tension steady for precise up/down shifts
- Works with 6/7 speed SIS INDEX systems for reliable shifting
- Best for mountain, road, and hybrid bikes with larger gear ranges