Shimano Dura-Ace Di2 Disc 11-speed road bike left-hand grip ISTR9170L

A top-of-the-range Dura-Ace Di2 control unit for hydraulic disc brakes

Shimano The Dura-Ace Di2 Disc 11-speed left-hand lever ST-R9170-L, part number ISTR9170L, is a top-of-the-range Dual Control shifter designed for road bikes fitted with an Shimano Dura-Ace Di2 11-speed electronic drivetrain and hydraulic disc brakes.

With its compact design, optimised ergonomics and precise Di2 shifters, it allows for efficient gear changes whilst ensuring reliable hydraulic braking. Shimano has refined the layout and tactile feedback of the shifters to facilitate gear changes during races.

The ST-R9170-L integrates into the Shimano 11-speed Di2 ecosystem and uses the E-Tube connectivity system. It also features an adjustable brake lever reach, allowing the control position to be adapted to the cyclist’s preferences.

Key features of the Shimano Dura-Ace ST-R9170-L

• Shimano Dura-Ace left-hand lever
• Part number: ST-R9170-L / ISTR9170L
• 11-speed Di2 electronic drivetrain
• Compatible with hydraulic disc brakes
• Dual Control technology
• Compact, sporty design
• Di2 shifters optimised for precise gear changes
• Brake lever reach adjustment
• E-Tube connectivity
• Compatible with the Shimano Di2 R9170 ecosystem
• Recommended brake caliper: BR-R9170
• Recommended hose: SM-BH90-JK-SSR
• Works withmineral oil Shimano

A control system designed for performance

The ST-R9170-L combines two essential functions: hydraulic disc braking and electronic gear shifting. Its Dual Control design allows you to maintain a familiar grip on the handlebars whilst enjoying the speed and precision of Di2.

The left-hand shifter is designed to operate within a Dura-Ace R9170 2x11-speed drivetrain. Shimano remains the reference in its Di2 compatibility documents for systems using BT-DN110/BT-DN110-A batteries and compatible 11-speed road derailleurs.