Shimano Dura-Ace ST-R9270 Left Di2 Lever with BR-R9270 Rear Disc Brake

Name: Shimano Dura-Ace ST-R9270 Left Di2 Lever with BR-R9270 Rear Disc Brake
Brand: Shimano
Price: 649.99 AUD
Availability: InStock

$649.99 AUD

Taxes included. Shipping calculated at checkout.

The Shimano Dura-Ace ST-R9270 Left Lever with BR-R9270 Rear Disc Brake delivers elite-level Di2 shifting, powerful hydraulic braking, improved modulation and refined ergonomics, making it a premium performance upgrade for serious road cyclists seeking faster gear changes, better control and race-ready braking on Brisbane and Australian roads.

Key Features

Premium Shimano Dura-Ace R9200-series 12-speed Di2 shift/brake technology
Hydraulic disc brake control with Servo Wave braking performance
BR-R9270 flat mount rear caliper with increased pad clearance to reduce rotor rub
Wireless Di2 cockpit layout for a clean, modern road bike setup
Carbon brake lever and high-end hardware for low weight and race-level feel

(more details...)

Technical Specifications

Product Name: Shimano Dura-Ace ST-R9270 Left Lever with BR-R9270 Disc Brake Rear
Series: Shimano Dura-Ace R9200 Di2
Product Type: Left hydraulic Di2 dual control lever with rear hydraulic disc brake caliper
Lever Model: ST-R9270-L
Caliper Model: BR-R9270 Rear
Speed: 2x12-speed Di2 compatible
Shifting Type: Electronic Di2 shifting
Brake Type: Hydraulic disc brake
Brake Position: Rear brake caliper supplied
Brake Lever Technology: Servo Wave Action
Caliper Mount Type: Flat mount
Brake Fluid: Shimano mineral oil
Brake Hose: Shimano SM-BH90-JK-SSR type hose compatibility
Hose Joint: Straight
Rotor Compatibility: Shimano road disc rotors, commonly 140mm or 160mm depending on frame setup
Pad Compatibility: Shimano road disc brake pads, including resin and metal options depending on setup
Standard Pad Type: Resin pads on many supplied versions
Pistons: 2-piston hydraulic caliper
Caliper Construction: Mono-body design
Pad Clearance: Wider pad clearance compared with previous-generation Shimano road disc brakes
Lever Material: Carbon fibre brake lever with premium hardware
Clamp Band Diameter: 23.8–24.2mm road handlebar clamp area
Reach Adjust: Yes
Free Stroke Adjust: Yes
Satellite Shifter Compatibility: Yes, compatible with Shimano satellite shifter systems
Battery Type: CR1632 coin cell battery for wireless lever operation
Di2 Connectivity: Wireless shifting with wired port compatibility depending on system configuration
Firmware / Setup: Shimano E-Tube app compatible
Colour: Shimano Dura-Ace series black / carbon finish
Average Weight: ST-R9270 lever pair approximately 350g; BR-R9270 caliper approximately 97g depending on configuration
Compatible Bike Type: Road bikes, aero road bikes, endurance road bikes, race bikes
Intended Use: Road racing, high-performance road cycling, endurance rides, fast bunch rides and premium custom road bike builds

Compatibility Notes

Designed for Shimano Dura-Ace and Ultegra 12-speed Di2 road systems.
Requires compatible Shimano Di2 derailleurs, battery and system components.
Professional installation and brake bleeding are recommended.
Not compatible with mechanical shifting drivetrains.

Shimano Dura-Ace Di2 Electronic Shifting

The ST-R9270 lever is part of Shimano’s top-tier road groupset platform, delivering extremely fast, accurate and consistent 12-speed electronic shifting. Di2 eliminates traditional mechanical shift cable friction, providing precise gear changes in all weather conditions.

Servo Wave Hydraulic Braking

Servo Wave technology changes the relationship between lever pull and pad movement to improve brake control. It helps bring the pads into contact quickly, then gives the rider a wider modulation range for smoother braking control.

Benefits include:

Better braking feel
Improved control on descents
More confident braking in wet weather
Enhanced modulation during fast group rides and racing

BR-R9270 Mono-Body Rear Caliper

The BR-R9270 caliper uses a compact mono-body construction designed to reduce weight while increasing stiffness. This improves braking response and helps provide a consistent lever feel under heavy braking.

Wider Pad Clearance

Shimano increased pad-to-rotor clearance in this generation to help reduce brake rub. This is especially useful for riders using lightweight road disc wheels where small rotor movement or heat expansion can otherwise create unwanted noise.

Mineral Oil Hydraulic System

Shimano mineral oil braking systems are known for smooth lever feel, predictable performance and workshop-friendly servicing. For riders completing high-kilometre road training, regular maintenance is straightforward for experienced bike mechanics.

Ergonomic Hood Shape

The revised Dura-Ace hood shape provides improved hand support, better grip security and increased comfort for long rides. This is particularly beneficial for riders spending hours on the hoods during endurance rides, bunch rides and road races.

Carbon Lever Construction

The carbon brake lever helps reduce weight while maintaining the premium feel expected from Shimano Dura-Ace components.

Lever Fit

Road drop-bar compatible
Clamp band diameter: 23.8–24.2mm
Designed for modern road handlebars
Suitable for compact, aero and traditional road bar profiles

Adjustment Options

Reach adjustment allows lever position tuning for different hand sizes.
Free stroke adjustment allows brake feel customisation.
Button functions can be customised through Shimano E-Tube.

Brake Fit

Rear flat mount caliper
Compatible with common road disc rotor setups
Suitable for 140mm or 160mm rear rotor configurations depending on frame, adaptor and rider preference

Best Suited For

Road racers
Performance road cyclists
Shimano Di2 riders replacing or upgrading components
Riders building a premium custom road bike
Cyclists upgrading to 12-speed electronic shifting
Endurance riders wanting better braking control
Aero road bike owners seeking a clean wireless cockpit

Professional road cycling reviews of the Shimano Dura-Ace R9200 Di2 groupset have consistently praised the system for its fast wireless shifting, refined ergonomics, powerful braking and improved brake modulation. Reviewers have particularly noted that the updated lever shape provides more hand support, while the hydraulic braking system offers excellent control on technical descents and during sustained high-speed riding.

The BR-R9270 caliper has also been positively received for its increased pad clearance, helping reduce rotor rub compared with previous-generation Shimano road disc systems.

Rider Feedback & Community Sentiment

Rider feedback around the ST-R9270 and BR-R9270 system is strongly positive, especially among cyclists upgrading from mechanical shifting or earlier Di2 groupsets.

Common positive comments include:

Very fast and precise shifting
Clean wireless cockpit appearance
Excellent braking power
Better brake modulation than previous generations
Comfortable hood shape for long rides
Reduced rotor rub compared with older Shimano road disc brakes
Premium Dura-Ace finish and low weight

Many riders consider the Dura-Ace R9270 lever and brake package one of the best choices for riders who want professional-level Shimano road bike control.

Why We Love It at Pedal Passion

We love the Shimano Dura-Ace ST-R9270 and BR-R9270 combination because it delivers the type of performance serious riders immediately notice. The braking is powerful but controlled, the ergonomics feel refined, and the Di2 integration creates a clean, premium cockpit.