Shift/Brake Set Shimano Ultegra ST-R8170/BR-R8170 Di2 Left, 2-speed
The Shimano Ultegra Di2 left 2-speed set delivers elite electronic shifting and finely modulated hydraulic braking for demanding road riders.
Overview
Shift/Brake Set Shimano Ultegra ST-R8170/BR-R8170 Di2 Left, 2-speed
The Shimano Ultegra Di2 ST-R8170 + BR-R8170 is a left-hand 2-speed electronic Dual Control shift and hydraulic disc brake set designed for high-performance road cycling. Wireless Di2 connectivity ensures lightning-fast and ultra-precise front shifting while delivering a clean, cable-free cockpit appearance.
Featuring Servowave technology, the brake lever offers extended braking control and outstanding modulation in demanding conditions. Reach and free-stroke adjustment allow fine-tuning of lever position. The 2-piston BR-R8170 caliper provides quieter operation thanks to 10% wider pad clearance and simplified maintenance via the One-Way-Bleeding system and separated bleed port layout. With the E-TUBE Project app, riders can customize synchronized shifting modes, multi-shift settings and button functions.
- Application: Road
- Series: Ultegra Di2 R8150
- Model: ST-R8170-L
- Mount: Left
- Front speeds: 2-speed
- Reach adjustment: Yes
- Handlebar diameter: 23.8–24.2 mm
- Brake type: Hydraulic disc brake
- Brake caliper: BR-R8170
- Mount type: Flat-Mount
- Brake pads: L03A Resin with Fin
- Brake hose: SM-BH90-JK-SSR front 1000 mm (cuttable)
- One-way bleeding: Yes
- Brake fluid: Shimano mineral oil
- Recommended rotor: RT-MT800 (140/160 mm)
- Compatible electric wire: EW-SD300
- E-TUBE port: 2
- Di2 wireless unit: Yes
- Battery: CR1632 x 1
