Shift/Brake Set Shimano Ultegra ST-R8170/BR-R8170 Di2 Left, 2-speed

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