Shimano Tourney RD-TY21 6/7-Speed Rear Derailleur (Black)
Restore smooth and reliable shifting to your bicycle with the Shimano Tourney RD-TY21 rear derailleur. Designed for 6-speed and 7-speed drivetrains, this component is an excellent choice for daily commuters, recreational cyclists, and youth bikes.
Constructed with a sturdy steel body and friction-reducing resin guide wheels, the RD-TY21 delivers consistent, light-action shifting while keeping weight to a minimum. Its sleek black finish provides a clean, modern look that easily matches any bike frame.
Mounting Notice: The Shimano TY21 derailleur is typically available in two mounting styles (Direct/Bolt-on or Bracket/Hanger mount). Please verify which type your bicycle frame requires before installation.
Key Features
- Reliable Performance: Part of Shimano's trusted Tourney series, offering precise Shimano Index System (SIS) shifting.
- Durable Construction: Made with a tough steel body to withstand the rigors of everyday riding.
- Smooth Operation: Equipped with resin guide wheels (pulleys) for quiet running and reduced chain wear.
- Lightweight Design: Weighs only approximately 268 grams, adding minimal weight to your drivetrain.
Technical Specifications
| Brand |
Shimano |
| Series |
Tourney |
| Model |
RD-TY21-Black |
| Speed Compatibility |
6 / 7 Speed |
| Color |
Black |
| Material |
Steel + Resin Guide Wheels |
| Weight |
~ 268g |
Package Contents
- 1 x Shimano Tourney RD-TY21 Rear Derailleur (Black)
Important Fitment Notes
- Drivetrain Compatibility: Designed specifically for friction and indexed 6 or 7-speed mountain, hybrid, and city bike drivetrains.
- Chain Sizing: When installing a new derailleur, ensure your bicycle chain is sized correctly and not excessively worn, as a worn chain can negatively impact shifting performance.