Front Derailleur. 2x12-speed. More compact and faster than ever, the ULTEGRA R8150 front derailleur performs digitally precise front shifts under any circumstances. Combining Shimano's new Di2 platform and the road incarnation of HYPERGLIDE+, the ULTEGRA R8150 front derailleur shifts between chainrings with our fastest, most seamless action.
- Our fastest ever front shifting, 45% faster than FD-R9150
- Smaller, sleeker, lighter
- Frontal area reduced by 33%
- Weight cut to 116 g
- Top gear teeth capacity: 50-52T
- Average weight: 110
- Compatible chain: HG 12-speed
- Action: Down Swing
- Mount: Brazed-On
- Chain line: 44.5 mm
- Chain stay angle: 61-66
- Top gear teeth: 46-52T
- Total capacity: 16T
- Link bushings: 4
- SD300 port: 1
