STONE Front Derailleur Extender Adapter for Shimano R7000, R8000 & R9100 (10/11-Speed)
This extender adapter is designed for Shimano 105 R7000, ULTEGRA R8000, and DURA-ACE R9100 road front derailleurs on 10-speed and 11-speed drivetrains. It lowers the front derailleur mounting position so smaller road chainrings can be used while maintaining reliable shifting performance.
Compatibility and Function
Compatible Models
| Derailleur | Drivetrain |
|---|---|
| Shimano DURA-ACE R9100 | 10/11-speed road |
| Shimano ULTEGRA R8000 | 10/11-speed road |
| Shimano 105 R7000 | 10/11-speed road |
Not Compatible With
- 12-speed systems
- Mountain bike front derailleurs
How It Works
The adapter drops the front derailleur mounting position. When running a smaller road chainring, such as a 48T or 46T, this lowers the derailleur so it aligns with the smaller chainring for more effective shifting.
Specifications
| Item | Detail |
|---|---|
| Extender material | 7075 aluminum alloy |
| Screw material | 304 stainless steel |
| Extension distance | 15.5mm |
| Weight | 4g |
Features
- Lightweight and compact design
- Precision CNC machined aluminum construction
- Optimizes front derailleur position for smaller chainrings
- Suitable for road bike drivetrain modification and setup adjustment
Package Includes
- 1 x front derailleur extender
- 1 x screw
Notes
- Please confirm your drivetrain model before purchase
- Designed for Shimano R7000 / R8000 / R9100 road front derailleur systems
- Intended for smaller chainring setups such as 48T / 46T
- Professional installation is recommended
