STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories
STONE Road Bike Front Derailleur Extender Adapter Convertor Raise Lower Height Adjustment for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Bike Chainring Accessories

STONE Front Derailleur Extender Adapter – 15.5mm for Shimano Di2 105 R7170

Raises or lowers the front derailleur by 15.5 mm.
Two variants: Extender-11S (lower only) and Extender-12S (raise or lower).
CNC-machined 7075 aluminum; road bikes only.

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STONE Road Bike Front Derailleur Extender Adapter – 15.5mm Height Adjustment for Shimano Di2 and SRAM Force AXS

Specifications

  • Product name: Road bike front derailleur extender adapter
  • Function: Front derailleur height adjustment
  • Adjustment type: Raise or lower the front derailleur position
  • Adjustment distance: 15.5 mm
  • Material: 7075 aluminum alloy
  • Screw material: 304 stainless steel
  • Process: CNC machined
  • Weight: Approx. 4 g
  • Application: Road bike front derailleur setup adjustment
  • Suitable for: Road bike drivetrain modification and smaller chainring setups
  • Bike type: Road bikes only
  • Installation position: Front derailleur mounting area

Extender 11s

For Shimano R7000 / R8000 / R9100 10 & 11-Speed

This version is designed to lower the front derailleur position, making it a good match for smaller road chainrings such as 48T / 46T.

Compatible With

  • Shimano 105 R7000
  • Shimano Ultegra R8000
  • Shimano Dura-Ace R9100
  • Shimano 10 / 11-speed road front derailleurs

Not Compatible With

  • 12-speed systems
  • SRAM front derailleurs
  • Mountain bike front derailleurs

Extender 12s

For Shimano Di2 12-Speed / SRAM Force AXS 12-Speed

This version can raise or lower the front derailleur position by 15.5 mm, giving compatible road electronic front derailleurs a wider adjustment range.

Compatible With

  • Shimano 105 Di2 R7170 / R7150 / R7100
  • Shimano Ultegra Di2 R8170 / R8150 / R8100
  • Shimano Dura-Ace Di2 R9250 / R9200
  • SRAM Force AXS 12-speed
  • Some 10 / 11-speed road front derailleurs

Not Compatible With

  • SRAM Red eTap 11-speed
  • SRAM Rival 12-speed raising function
  • Shimano R7100 12-speed raising function
  • Mountain bike front derailleurs

Important Notes

  • Compatibility varies by front derailleur model. Please check compatibility before purchase.
  • Not compatible with SRAM RED eTap 11-speed electronic front derailleurs.
  • SRAM Rival 12-speed front derailleurs support lowering adjustment only; height-raise adjustment is not supported.
  • Shimano 105 R7100 12-speed front derailleurs support lowering adjustment only; height-raise adjustment is not supported.
  • Not compatible with mountain bike front derailleurs that are directly mounted to the frame.

Main Difference Between the Two Variants

Variant Function Compatible System
Extender-12s Raise or lower front derailleur Shimano Di2 12-speed / SRAM Force AXS 12-speed / selected 10-11 speed
Extender-11s Lower front derailleur only Shimano R7000 / R8000 / R9100 10-11 speed

Package Includes

  • 1 × Front Derailleur Extender Adapter Set