The Dura-Ace Di2 SW-R9160 Shimano s (part no. ISWR9160) are electronic satellite shifters for triathlon and time trials, designed to control an 11- or 12-speed Shimano Di2 drivetrain from the aero handlebar extensions.

They attach to the ends of the handlebar extensions and allow you to change gears without leaving the aero position – a major advantage in time trials and triathlons where every second counts.

Operation and use

These shifters operate using a single-button system per control. In practice:

• one press = rear gear change (or front, depending on configuration)
• fully customisable configuration via Shimano E-Tube
• can be integrated with Synchronised Shift mode, where the system automatically manages the chainrings to optimise the gear ratio

They are designed for use with Di2 main shifters (ST-R9160, ST-R9180, etc.), but can also operate independently on a properly configured CLM cockpit.

Key benefits

These SW-R9160 shifters are designed for pure performance:

• Gear changes in an aerodynamic position
• Very compact design on aerobars
• Wide Di2 compatibility (11- and 12-speed depending on setup)
• Advanced customisation via E-Tube Project
• Immediate responsiveness of the electronic system

The minimalist, single-button design minimises errors and facilitates quick actions during maximum effort.

Compatibility

The SW-R9160 is compatible with:

• Shimano Dura-Ace Di2 (11- and 12-speed)
• Shimano Ultegra Di2 (depending on generation)
• Triathlon/time trial handlebars with extensions
• Shimano E-Tube systems (Di2 cabling)

They connect via the Di2 network and can be integrated into various set-ups, with or without main brake/shift levers depending on the configuration.

Technical specifications

• Brand: Shimano
• Range: Dura-Ace Di2
• Model: SW-R9160
• Part number: ISWR9160
• Type: satellite shifters (extension buttons)
• Use: time trial / triathlon
• Mounting: end of handlebar extensions
• Control: single programmable button
• System: Shimano Di2 electronic system (E-Tube)
• Compatibility: 11–12-speed depending on configuration
• Weight: very light (approx. 40 g per pair)

FAQ

What are the SW-R9160 used for?

They allow you to change gears without letting go of the aerobars whilst in an aerodynamic position.

Are they compulsory on a time trial bike?

No, but they are strongly recommended to optimise efficiency and avoid losing your aero position.

Can they be used on their own?

Yes, they can be used on their own with a specific Di2 setup, but are often combined with ST-R9160 or ST-R9180 shifters.

Are they compatible with 12-speed systems?

Yes, depending on the Di2 generation and E-Tube configuration, they can operate in 11- or 12-speed modes.

Is it difficult to install?

Installation is straightforward for a Di2-equipped workshop, but requires E-Tube cabling and software configuration.