Shimano Ultegra ST-R8170 Right Di2 Lever with BR-R8170 Front Disc Brake

Name: Shimano Ultegra ST-R8170 Right Di2 Lever with BR-R8170 Front Disc Brake
Brand: Shimano
Price: 484.99 AUD
Availability: InStock

$484.99 AUD

Taxes included. Shipping calculated at checkout.

The Shimano Ultegra ST-R8170 Right Lever with BR-R8170 Front Disc Brake delivers high-performance 12-speed Di2 electronic shifting, confident hydraulic front braking and refined road-bike ergonomics, making it one of the best-value premium upgrades for riders wanting near Dura-Ace performance at a more accessible price.

ST-R8170 Features

Shimano Ultegra R8100-series 12-speed Di2 electronic shift/brake lever
BR-R8170 front hydraulic disc brake caliper for powerful stopping control
Servo Wave brake technology for improved modulation and lever feel
Wireless Di2 cockpit communication for a cleaner, more aerodynamic front end
10% wider pad clearance to help reduce rotor rub and brake noise

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Technical Specifications

Product Name: Shimano ST-R8170 Right Lever with BR-R8170 Front Disc Brake
Series: Shimano Ultegra R8100
Lever Model: ST-R8170-R
Brake Caliper Model: BR-R8170
Lever Position: Right-hand lever
Brake Position: Front brake setup
Shifting Type: Shimano Di2 electronic shifting
Speed: 12-speed
Brake Type: Hydraulic disc brake
Brake Mount: Flat mount
Brake Fluid: Shimano mineral oil
Brake Hose Compatibility: Shimano SM-BH90-JK-SSR
Hose Joint: Straight
Recommended Brake Caliper: Shimano BR-R8170
Brake Technology: Servo Wave Action
Reach Adjust: Yes
Free Stroke Adjust: Yes
Clamp Band Diameter: 23.8–24.2mm
Di2 Connectivity: Wireless and wired Di2 compatible
Firmware Updates: Shimano E-Tube Project compatible
SD300 Port: 1
Satellite Shifter Port: 1 SD300 satellite shifter port
Battery Type: CR1632 lever battery
Claimed Lever Battery Life: Approximately 1.5 to 2 years depending on use
Average Lever Weight: Approximately 391g per pair
Average Caliper Weight: Approximately 123g
Pad Clearance: 10% wider clearance compared with previous-generation Shimano road disc brake systems
Standard Brake Pad Compatibility: Shimano K05S-RX resin pads and L05A-RF finned resin pads depending on supplied configuration
Optional Brake Pad Compatibility: Shimano L04C-MF metal finned pads
Bike Compatibility: Road bikes, aero road bikes, endurance road bikes and race bikes
Recommended Use: Road cycling, endurance riding, racing, fast bunch rides, Gran Fondo events and premium bike upgrades

Compatibility Notes

Designed for Shimano 12-speed Di2 road drivetrains.
Best matched with Shimano Ultegra R8100 components.
Compatible with suitable Shimano Dura-Ace R9200 and 105 Di2 12-speed systems where system compatibility is confirmed.

Shimano 12-Speed Di2 Electronic Shifting

The ST-R8170 right lever forms part of Shimano’s latest Ultegra Di2 electronic road platform, delivering fast, accurate and repeatable shifting without traditional mechanical cable stretch, friction or contamination.

Wireless Cockpit Communication

Shimano’s semi-wireless Di2 design allows the shift lever to communicate wirelessly with the drivetrain system, reducing cockpit clutter and helping create a clean, modern road bike setup.

Servo Wave Hydraulic Braking

Servo Wave technology improves braking control by changing how pad engagement builds through the lever stroke. Riders get quicker initial pad contact followed by a wider modulation zone for more controlled braking.

BR-R8170 Front Hydraulic Caliper

The BR-R8170 front caliper provides strong stopping power, improved brake modulation and quieter operation. As the front brake delivers the majority of stopping force on a road bike, this setup is ideal for riders wanting more confidence on descents and in fast group riding.

Wider Pad Clearance

The 10% wider pad clearance helps reduce rotor rub, ticking and brake noise, especially after hard braking, wheel removal or heat build-up on long descents.

Improved Lever Ergonomics

The updated hood shape includes a raised hood peak and improved hand support, giving riders better comfort and control during long hours on the hoods, sprinting, descending or braking from high speed.

E-Tube Customisation

Shimano E-Tube compatibility allows button function changes, firmware updates and system diagnostics, making the lever suitable for riders who want a customised Di2 setup.

Lever Fit

Designed for standard road drop handlebars
Clamp band diameter: 23.8–24.2mm
Right-hand road shift/brake lever configuration
Suitable for compact, traditional and aero road handlebars

Adjustment Options

Reach adjustment for different hand sizes
Free stroke adjustment for brake feel tuning
Customisable Di2 button functions
Compatible with Shimano SD300 satellite shifters

Brake Fit

Front hydraulic disc brake configuration
Flat mount caliper design
Commonly used with 140mm or 160mm front road rotors depending on fork compatibility, rider weight and braking preference

Fit Recommendation

For best performance, installation should include correct lever position, brake hose trimming, fresh olive and insert fitting, Di2 pairing, caliper alignment, rotor inspection and a professional hydraulic brake bleed.

Best Suited For

Road cyclists upgrading to Shimano 12-speed Di2
Ultegra Di2 riders replacing damaged or worn components
Performance-focused endurance riders
Club racers and fast bunch ride cyclists
Riders building a premium road bike
Aero road bike owners wanting clean cockpit integration
Cyclists seeking stronger front braking and improved shift precision

Cyclists Hub, updated April 2026, praised Shimano Ultegra R8100 Di2 for excellent shifting, braking performance, reliability and long battery life after extended real-world use.

Bikerumor, January 2024, highlighted Shimano Ultegra R8100 as a durable and refined long-term groupset, with smooth shifting and dependable performance over high mileage.

Gravel Cyclist, October 2023, tested Ultegra Di2 12-speed across mixed surfaces and praised its smooth shifting, strong braking and reliable real-world function.

Overall, professional feedback positions Ultegra R8170 as one of the strongest value choices in premium electronic road groupsets.

Cyclists Hub, updated April 2026, praised Shimano Ultegra R8100 Di2 for excellent shifting, braking performance, reliability and long battery life after extended real-world use.

Bikerumor, January 2024, highlighted Shimano Ultegra R8100 as a durable and refined long-term groupset, with smooth shifting and dependable performance over high mileage.

Gravel Cyclist, October 2023, tested Ultegra Di2 12-speed across mixed surfaces and praised its smooth shifting, strong braking and reliable real-world function.

Overall, professional feedback positions Ultegra R8170 as one of the strongest value choices in premium electronic road groupsets.