By pairing SHIMANO's new Di2 platform with the road incarnation of HYPERGLIDE+, the ULTEGRA R8150 derailleur shifts between chainrings with the fastest, smoothest action on the market.
- Faster chainring change than ever, 45% faster than FD-R9150
- Smaller, more aerodynamic, lighter
- Frontal area reduced by 33%
- Weight reduced to 116 g
- Maximum crown toothing: 50-52T
Combining SHIMANO's new Di2 platform with the road incarnation of HYPERGLIDE+, the ULTEGRA R8150 derailleur shifts between chainrings with the fastest, smoothest action on the market.
- Shifting faster than ever, 45% faster than FD-R9150
- Smaller, more aerodynamic, lighter
- Frontal area reduced by 33%
- Weight reduced to 116 g
- Maximum crown toothing: 50-52D