Shimano Ultegra DI2 R8170 12 Speed Disc Brake Groupset

The latest Ultegra DI2 componentry is now 12 speed and that extra sprocket makes all the difference. The revolutionary Di2 shifting system solves the challenges drivetrains present to the power-delivery equation in cycling. Di2 gives you instant, accurate, lighting-fast shifts the first and every time, at the push of a button. Even in the most extreme conditions, shifting is precise and controlled. You can change gear even under heavy load while climbing or accelerating. With Di2, you are in complete control.

Shimano Ultegra DI2 R8170 12 Speed Disc Brake Groupset is highly customizable using Shimano's user-friendly E-TUBE App on your smartphone or PC. With E-TUBE, you can set up your drivetrain just the way you like it; adjust shift speed, alter the number of shifts per button actuation, and utilize synchro and semi-synchro functionality. You can also use E-TUBE to connect your Shimano 12-speed wireless drivetrain with Shimano Connected Partners like Garmin and Wahoo. This connectivity allows you to take advantage of features like scrolling through GPS screens using buttons on your shifter rather than taking your hands off the bars.

Shimano Ultegra DI2 R8170 12 Speed Disc Brake Groupset features new braking systems, which are quieter, easier to maintain, and deliver superior control. Improvements start with the addition of Shimano’s proven SERVO WAVE technology. First developed for mountain bikes, SERVO WAVE provides a quick initial bite, then slows down lever force generation for better modulation. The new brake calipers offer increased pad-to-rotor clearance when the brake is disengaged, lessening the likelihood of rotor rub even if a rotor is slightly out of true. Combination of 11-30, 11-34 and 11-36 cassettes paired with 50-34 or 52-36 chainrings deliver a gear range to meet any situation. A single rear derailleur option has eliminated any need for long or short cage models one derailleur will do it all.

Shimano Ultegra DI2 R8170 12 Speed Disc Brake Groupset Features

Crankset: Shimano Ultegra FC-R8100

Shifters: Shimano Ultegra ST-R8170 Hydraulic disc brakes with wireless Di2 shifting.

Front Derailleur: Shimano Ultegra Di2 FD-R8150

Rear Derailleur:Shimano Ultegra Di2 RD-R8150

Cassette: Shimano 12 speed 11-30, 11-34 and 11-36

Chain: Shimano 12 speed

Shimano BT-DN300 Di2 Internal Mount Battery

Shimano EW-EC300 Battery Charging cable