Shimano Ultegra R8170 Di2 12-Speed Groupset

Shimano Ultegra R8170 Di2 12-Speed Groupset – Elite Performance, Intelligent Value

Experience the pinnacle of shifting and braking without the pinnacle price tag. The Shimano Ultegra R8170 Di2 groupset directly inherits the groundbreaking technology of the flagship Dura-Ace series, delivering performance that is, to all intents and purposes, indistinguishable from the best. It’s the definitive choice for riders who demand flawless wireless electronic shifting, powerful braking, and proven reliability, all in a package that’s built for real-world racing. The performance gap to the top has been closed; the choice is now simply intelligent value.

Key Features

• Flawless, Faster Di2 Shifting: The semi-wireless Di2 system provides the fastest, most precise gear changes Shimano has ever made. Thanks to new motor and circuit technology, rear shifts are up to 58% faster and front shifts 45% faster than the previous generation, matching Dura-Ace speed. Hyperglide+ tooth profiling ensures seamless shifts even under maximum power load.

• Unmatched, Silent Braking: Redesigned flat-mount calipers offer increased pad-to-rotor clearance, virtually eliminating the annoying rub in wet or gritty conditions. With updated Servo Wave lever ergonomics, pad engagement is quicker and more progressive, providing immense stopping power with superb modulation. A fix for heat-induced noise means you enjoy a blissful silence on long descents.

• Clean, Wireless Cockpit: A completely wireless connection between the shift levers and derailleurs declutters your cockpit, simplifies installation, and improves aerodynamics. The internal battery mounts discreetly in your seatpost, and the charging port is now integrated into the rear derailleur, eliminating the need for messy junction boxes.

• Intelligent Integration: The compact Shadow rear derailleur houses the wireless unit, charging port, and a multifunction button/LED for checking battery status and shifting mode. Long-lasting CR1632 coin cell batteries in the shifters offer 1.5 to 2 years of hassle-free use.

• Smooth, Wide-Range Drivetrain: The addition of a 12th sprocket creates smoother gear progression, while a single, versatile rear derailleur cage handles cassettes with 28-34T low sprockets. This allows you to conquer any gradient without sacrificing close-ratio shifting on the flat.

Technical Specifications

*Note: E-Tube wires (SD300) and bottom bracket are not included in the groupset box. Please select required wiring lengths and bottom bracket type based on your frame.*

What's Included in the Box (In the Box)

• Shimano Ultegra Di2 ST-R8170 Hydraulic Disc Brake/Shift Levers (Left & Right)

• Shimano Ultegra Di2 FD-R8150 Front Derailleur (Braze-on)

• Shimano Ultegra Di2 RD-R8150 Rear Derailleur

• Shimano Ultegra FC-R8100 12-Speed Double Chainset (configurable)

• Shimano CS-R8100 105 12-Speed Cassette (11-34T/11-30T)

• Shimano  CN-M8100 12-Speed Quick-Link Chain (116L)

• Shimano RT-CL800 Ice-Tech FREEZA Disc Rotors (2x 160mm)

• Shimano Di2 BT-DN300 Internal Battery (3 Port)

• Shimano EW-EC300 Battery Charging Cable (1700mm)

Price: ¥XXX / $XXX (Frameset not included. Please configure your required chainset and cassette options.)

Your performance upgrade path is clear. Click "Add to Cart" to build your ultimate race machine with Shimano R8170 Di2.