Fit for:
SHIMANO DURA-ACE R9100
ULTEGRA R8000
105 R7000
10s/11s Road Bike front derailleur (not fit for 12s, not fit formountain bike)
Function: if you want to use small size of chainring such as 48T 46T, then need this extender to make your front Derailleur lower to let it fit to the 48 46T chainring.
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier. Offer best stiffness and endurance.
Material:
Extender: AL7075
Screw: 304
extend distance: 15.5mm
Weight: 4g
STONE — Race-Ready Precision
Trusted by riders worldwide and favored by EU & USA race teams, STONE is built for high-load riding and competitive performance.
Using aerospace-grade 7075-T651 aluminum from Alcoa and Aleris, STONE achieves exceptional stiffness and durability, with a tested lifespan of up to 15,000 km.
High-precision CNC machining within 0.03 mm tolerance guarantees efficient power transfer, minimal noise, and stable shifting under pressure.
