Shimano Ultegra Di2 R8170 2x12 Speed Upgrade Kit

Lightning-fast continuous shifting

Shimano’s latest Ultegra Di2 drivetrain technology and shifting performance to a whole new level, uninterrupted and intuitive experience to road cycling. New Di2 shifting systems uses exclusive wireless technology to deliver the fastest, most accurate shifting on the market and battery life is also best-in-class. Fastest ever front and rear shifting, 45% faster than FD-R9150 annd 58% faster than RD-R9150.

The Most Inspired Drivetrain

Ultegra Di2 R8100 drivetrain is packed with innovative game-changing features. With hyperglide+ technology comes to road cycling for the first time, providing faster and smoother shifting. Hyperglide+ improves shifting both up and down the cassette, even under maximum pedaling load.

Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation. Sticking with 11-tooth small cogs enhances drivetrain efficiency while also retaining compatibility with current 11-speed Shimano freehub bodies. No new standards or proprietary wheel parts necessary.

The Ultegra RD-R8150 rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering fastest, most accurate shifting. More versatile than thanks to a single cage length that is compatible for cassettes from 11-28 to 11-34.

Combining Shimano's new Di2 platform and hyperglide+ to the new Ultegra FD-R8150. It shifts 45% faster than FD-9150. Smaller, sleeker, lighter thanks to a reduced frontal area by 33% and a weight cut to only 116g.

Refined Interface and Ergonomics

Redesigned Ultegra ST-R8170 dual control levers have all new ergonomics, more precise brake modulation and wireless electronic shifting. Sleek wireless cockpit brings simplicity and clean aesthetics. Wireless connection enhances the aerodynamic effect and easy maintenance. Optimized brake control with lighter, smoother action and enhanced modulation thanks to an expended braking control area.

Enhanced Brake System

The new Ultegra BR-R8170 disc brake caliper now features Shimano’s proven Servo Wave technology that enhances brake performance thanks to a quicker initial braking point and enhanced modulation. A tour de force in braking yet still minimize brake rub, With Ultegra R8170 disc brake caliper, you can focus on your next sprint or descent.

A refined brake caliper design, delivering a quieter brake system. The new brake calipers boast a 10% increase in pad-to-rotor clearance to reduce noise while a separate bleed port and valve screw improve the bleeding process so that it’s now possible to bleed the system without removing the caliper from the frame.

Ultegra Di2 R8170 2x12 Speed Upgrade Kit includes:

1. Ultegra ST-R8170 2x12 speed Di2 shifters - left/front + right/rear
2. Ultegra BR-R8170 hydraulic disc brake calipers (resin pads) - front + rear
3. Ultegra FD-R8150 Di2 2x12 speed front derailleur
4. Ultegra RD-R8150 Di2 12 speed rear derailleur
5. BT-DN300 Di2 battery (built-in type)
6. EW-SD300 electric wire - 1x900mm & 1x1600mm
7. EW-EC300 charging cable - 1700mm

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