The Shimano Dura-Ace Di2 ST-R9160-R brings flagship electronic shifting to the time trial and triathlon position. Designed specifically for aero bars, this right-hand lever pairs a single-button Di2 shifter with a SLR-EV rim brake lever in a carbon construction that keeps weight to approximately 65g. Whether you're riding a dedicated TT bike or a triathlon rig, the ST-R9160-R lets you change gears without lifting your hands from the bars — keeping you low, aero, and in control.

Highlights

• Dura-Ace Di2 precision: Instant, accurate electronic gear changes at the push of a button — no cable tension, no missed shifts.
• Single-button aero design: One switch per lever shifts the rear derailleur (via Synchronized Shift), letting you stay in the aero position throughout a race.
• Synchronized Shift integration: Works exclusively with Di2 Synchronized Shift, automatically managing the front derailleur as you sweep through the cassette.
• Carbon CFRP construction: Carbon fibre reinforced plastic body and painted carbon lever keep individual weight to approximately 65g.
• SLR-EV rim brake lever: High-modulation rim braking with adjustable reach to suit different hand sizes.
• Reach adjustment: Screw-based reach adjust tailors lever distance to the rider's grip, improving braking confidence and control.
• E-Tube compatible: Firmware updatable via Shimano E-Tube Project for ongoing compatibility and Synchronized Shift tuning.

TT and Triathlon Racing

The ST-R9160-R is purpose-built for riders who spend race time in the aero position. Unlike standard road STI levers, the TT/Tri lever mounts to the end of aerobars and positions the shift button exactly where your hands rest — meaning no need to sit up or reach to change gears. Combined with Di2's instant electronic actuation, gear changes are faster and more reliable than any mechanical system, even in the fatigue of the late stages of a race.

Compatibility & Fit

The ST-R9160-R is an 11-speed Di2 lever designed for rim brake drivetrains in the Shimano Dura-Ace R9150 Di2 groupset. It connects to the Di2 system via a single EW-SD50 E-Tube port. Clamp band inner diameter: 19.0–22.5mm (suits standard DH/aerobar ends). This lever operates exclusively in Synchronized Shift mode — manual front derailleur control is not available. Compatible with Di2 battery BT-DN300. Firmware version 3.3.0 or higher required for full compatibility. This is the right-hand lever only; the left-hand lever (ST-R9160-L) is sold separately.