Shimano ULTEGRA Di2 FD-R8150 2x12-speed Front Derailleur

The Shimano Ultegra Di2 FD-R8150 2 x 12-speed front derailleur incorporate these new cockpit functions. The electronic front derailleur is compact and designed to protect the shifting operation in the event of a crash.

THE SCIENCE OF SPEED: Shimano Ultegra Di2 2x12-speed Front Derailleur FD-R8150

Great speed means great responsibility. That's why, faced with the task of making the new ULTEGRA groupset even faster, Shimano decided to take a holistic and 100% performance-focused approach. Shimano's new 12-speed road groupset delivers unparalleled control and comfort anytime, anywhere - whether you're competing in an amateur race, chasing your personal best, or out for a social ride. That is "Science of Speed". And it's what sets SHIMANO apart from the rest.

The ULTEGRA R8150 front derailleur is more compact than ever and a genuine power unit. The front derailleur switches perfectly seamlessly between the chainrings and performs its shifting operations with digital precision in all conditions. In addition, the front has been reduced, thus optimising aerodynamics.

---

Features - Shimano ULTEGRA Di2 FD-R8150 2x12-speed Front Derailleur Braze On

• FULLY CUSTOMISABLE
  • The drive can be adapted to the rider's preferences via the E-TUBE app
  • Among other things, the shift speed can be set, a fully or semi-synchronous shift mode can be selected and the programme buttons on the gear lever can be assigned specific functions
• WHEN EVERY SECOND COUNTS
  • Our exclusive wireless protocol increases shifting speed without sacrificing any of the shifting precision and reliability SHIMANO is known for
• Frontal area of attack of the front derailleur reduced by 33%
• Fastest gear changes front and rear
• Compact and clean optics

Product features

• Use: Road
• Group: Ultegra Di2 R8150
• Model: FD-R8150
• Mounting: Braze On
• Action: Down-Swing
• Gear front: 2-speed
• Gear rear: 12-speed
• Top gear teeth: 46-52T
• Total capacity: 16T
• Compatible chain: CN-M8100 HG 12-speed
• Chain stay angle: 61-66°
• Chain line: 44.5mm
• Compatible electric wire: EW-SD300
• Firmware update by E-tube Project: Yes
• E-tube port (pcs): 1
• E-tube connector (pcs): 0
• Di2 Wireless-Chip: No

Material

• Aluminum
• Titanium
• CFRF

Color

• Series color

---

Scope of delivery

• 1 x Shimano Ultegra Di2 FD-R8150 2x12-speed Front Derailleur Braze On

---

Technologies

SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
The SEIS innovative shift technology is still based on the SHIMANO INDEX SYSTEM (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. The shift system allows accurate and effortless shifting in difficult circumstances like when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical Dual Control Levers so you don’t need to re-program your mind for a new system.

E-Tube 
E-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function.