SHIMANO
Shift/Brake Lever Shimano Ultegra ST-R8170 Di2 Left, 2-speed
Shift/Brake Lever Shimano Ultegra ST-R8170 Di2 Left, 2-speed
The Shimano ULTEGRA Di2 ST-R8170 is a left-hand 2-speed STI Dual Control shift/brake lever designed for 2x12 road drivetrains with hydraulic disc brakes. The latest-generation Ultegra Di2 combines wireless electronic shifting, refined ergonomics and precise braking control for top-level performance in racing and training.
SHIMANO’s proven SERVO WAVE technology enhances brake modulation and control, while the updated lever shape with raised and rounded hoods improves grip and aerodynamics. The wireless Di2 system features Shimano’s proprietary secure chip, offering extremely low interference, fast processing speed and high energy efficiency. Via the E-TUBE app, riders can customize shift speed, choose full or semi-synchronized shifting modes and assign additional functions to the programmable buttons. The result is the fastest and most reliable shifting performance ever delivered by the Ultegra series.
- Application: Road
- Group: Shimano Ultegra Di2 R8150
- Model: ST-R8170-L
- Type: Dual-Control (STI), Di2
- Mount: Left
- Front speeds: 2-speed
- Reach adjustment: Yes
- Handlebar diameter: 23.8–24.2 mm
- Brake type: Hydraulic disc brake
- Recommended caliper: BR-R8170
- Compatible electric wire: EW-SD300
- E-TUBE Project: Yes
- E-TUBE ports: 2
- E-TUBE plugs: 0
- Di2 wireless chip: Yes
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Shimano is a Japanese component manufacturer that since 1921 has been one of the world’s largest suppliers of bicycle drivetrains, brakes and cycling-specific parts. Shimano groupsets — from Tourney for city bikes to top-tier Dura-Ace — are found on virtually every serious bike brand. The company also makes fishing tackle and rowing components.