Shimano Shimano Ultegra Di2 R8150 Brazed on front derailleur

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