Engineered to redefine drivetrain performance, Shimano Dura-Ace R9170 Di2 Disc Brake 11-Speed Groupset is a coveted choice among professional riders, renowned for its unparalleled shifting precision and advanced functionality.
Crafted with meticulous attention to detail, the Dura-Ace R9170 Groupset combines hydraulic disc brake technology and DI2 electronic shifting. So, you can expect to get unrivaled control and responsiveness.
The best thing about this groupset is that every component has been designed to magnify the performance of the entire system.
In this review, we are going to discuss why this groupset is a great choice for riders who seek the best performance.
Key specification of this groupset
Here’s a table describing the key features of the Shimano Dura-Ace R9170 Di2 Disc Brake 11-Speed Groupset:
|Electronic Shifting||Precise and efficient electronic shifting for smooth and instantaneous gear changes|
|Shift/Brake Levers||Ergonomically designed shift/brake levers for comfortable and responsive control|
|Front Derailleur||Front derailleur with automatic trimming for optimal chain line and minimal chain rub|
|Rear Derailleur||Rear derailleur with Shadow RD technology for improved stability and accurate shifting|
|Cassette||Wide range cassette options for customizable gear ratios and versatile performance|
|Chain||High-quality chain for efficient power transfer and durability|
|Crankset||Hollowtech II crankset for increased stiffness and lightweight design|
|Bottom Bracket||Durable bottom bracket with improved sealing for smooth and reliable performance|
|Brake Calipers||Hydraulic disc brake calipers for consistent and powerful braking performance|
|Brake Type||Hydraulic disc brake system for reliable and responsive braking|
|Di2 E-Tube Technology||E-Tube technology for easy customization, firmware updates, and system diagnostics|
|Wireless Connectivity||Synchronized shifting and wireless connectivity with compatible cycling computers and smartphones|
|Compatibility||Compatible with other Shimano 11-speed components for easy integration|
|Weight||Lightweight design for improved overall bike weight and efficiency|
|Durability||High-quality construction and materials for long-lasting performance|
|Recommended Use||Ideal for road cycling, offering precise shifting, powerful braking, and high-performance components|
Shimano Dura Ace Di2 ST-R9170 STI for Disc Brakes
Now, let’s deep dive into the main features of this amazing groupset:
Perfect Balance for Enhanced Performance
The Dura-Ace R9170 Groupset boasts a perfectly balanced system, optimizing performance by maximizing efficiency.
Every individual component has been improved upon, resulting in a truly superior groupset that delivers exceptional performance on the road.
Synchro Shift Technology
Dura-Ace R9170’s Synchro Shift Technology revolutionizes the shifting experience by intelligently coordinating the front and rear derailleurs.
As you shift between chainrings, this advanced system automatically adjusts the rear derailleur, optimizing gear steps and maintaining your rhythm.
With the choice of “Full” or “Semi” Synchro Shift modes, you can customize your shifting preferences. Also, by seamlessly integrating shifting patterns, the Dura-Ace R9170 ensures smooth and precise gear changes.
The simplicity and efficiency of Dura-Ace R9170’s Synchro Shift Technology, allow you to focus on the ride ahead.
Hydraulic Disc Brake Excellence
I have to admit, this groupset sets a new standard for excellence in road cycling.
The reason is the groupset is designed with precision and performance in mind. As a result, this hydraulic disc brake system delivers unparalleled braking power and control.
No doubt, the advanced technology behind it ensures consistent and reliable braking, even in the most demanding conditions. Whether you’re navigating tight corners or descending at high speeds, the Dura-Ace R9170 Hydraulic Disc Brake provides confidence-inspiring stopping power.
With its optimized brake lever shape, stroke, and contact point, you’ll experience enhanced modulation and a responsive braking feel.
Ergonomic Front Derailleur
With its ergonomic shifting operation, this front derailleur ensures smooth and precise gear changes without causing stress or discomfort to the rider.
Its SHIMANO synchronized shift feature enhances shifting performance by automatically adjusting the rear derailleur with each chainring shift. Thus, it maintains the rider’s rhythm and minimizes gear steps.
The front shifting is quick and smooth even under high pedaling torque, allowing for seamless transitions between gears.
A bonus for sure as the Dura-Ace R9170 offers cutting-edge wireless connectivity for enhanced functionality and convenience. With the inclusion of the EW-WU111 wireless transmitter unit, this groupset allows seamless connectivity to iOS and Android devices.
By using Shimano’s free app and the Shimano power meter, cyclists can access a wealth of data and analytics to fine-tune their performance.
This wireless connectivity eliminates the need for cumbersome cables and provides a clean and streamlined setup.
Whether it’s monitoring power output, analyzing ride data, or customizing settings, the Dura-Ace R9170’s wireless connectivity is a bonus help.
Designed for both mechanical rim brake and hydraulic disc brake systems, these shifters offer a familiar shape with an improved “mechanical-like” feel in the shift button.
The redesigned layout and increased surface area provide tactile feedback and a satisfying click, ensuring precise and intuitive shifting even in challenging race conditions.
Advanced Crankset Design
Building upon the iconic 4-arm construction, Shimano has optimized the crank arm design to reinforce key stress zones while reducing weight by 7 grams.
The crankset’s HOLLOWGLIDE chainring construction ensures efficient power transfer and accommodates shorter chainstays without compromising performance.
With a range of rider-tuned gear combinations, including options for chainring sizes and crank arm lengths, the Dura-Ace R9170 crankset offers versatility and precision for road cyclists.
Its thoughtful design and attention to detail make it a standout choice for riders seeking top-level performance and reliability.
Imagine navigating challenging descents on a winding mountain road. The Dura-Ace R9170’s hydraulic disc brakes inspire confidence, providing precise modulation and reliable stopping power, even in wet conditions.
The Synchro Shift technology ensures smooth transitions between chainrings, maintaining your momentum and rhythm throughout the ride.
The wireless connectivity allows you to analyze your performance data, giving you valuable insights for training and improvement.
#1. What is the difference between mechanical and Di2 shifting?
Ans: Mechanical shifting relies on cables and levers, while Di2 (Digital Integrated Intelligence) shifting uses electronic signals for precise and reliable gear changes.
#2. Can I use the Dura-Ace R9170 Di2 groupset on a bike with rim brakes?
Ans: Yes, the Dura-Ace R9170 Di2 groupset is available in both mechanical rim brake and hydraulic disc brake versions, offering compatibility for different bike setups.
The Shimano Dura-Ace R9170 Di2 Disc Brake 11-Speed Groupset is a top-tier cycling component that offers unparalleled performance and functionality.
While it may come at a higher price point and require professional installation, it’s cutting-edge technology and precise shifting make it a standout choice for those seeking the pinnacle of drivetrain performance.
Elevate your cycling experience with the Shimano Dura-Ace R9170 Groupset and experience the epitome of excellence on the road.