Shimano DURA ACE Di2 ST-R9270+BR-R9270 2-speed Disc Brake front

The Shimano DURA-ACE Di2 ST-R9270 + BR-R9270 (front) combines cutting-edge wireless shifting with powerful, quiet hydraulic disc braking, all in a sleek and aerodynamic setup. Featuring SERVO WAVE technology for superior brake modulation and a redesigned DUAL CONTROL lever for seamless gear changes, this unit is built for precision, control, and all-out speed.

🔧 Highlights

• Wireless Di2 shifting for a clean cockpit and ultra-responsive gear changes

• DUAL CONTROL lever with lightweight carbon construction and improved ergonomics

• 2-piston hydraulic disc caliper with wide pad clearance and quiet operation

• Fully customizable via Shimano’s E-TUBE Project app

⚙️ Key Features

• Shifter: ST-R9270-L, 2-speed, left-hand dual control

• Caliper: BR-R9270 hydraulic, flat-mount, 2-piston

• Brake Pads: L03A resin with cooling fins

• Hose: SM-BH90-JK-SSR (1000mm, shortable)

• Reach Adjust: Yes

• Bleeding System: One-Way, easy maintenance

• Brake Fluid: Shimano mineral oil

• Wireless Chip: Shimano Di2, ultra-secure and energy efficient

• Battery Life: Approx. 1.7 years (CR1632)

• E-TUBE App Compatibility: Yes (EW-SD300)

• Rotor Compatibility: SM-RT900 (140mm / 160mm)

• Material:

  • Lever: Painted carbon

  • Body: CFRP

  • Caliper: Aluminium

⚡ Performance Benefits

• Instant, customizable shifting for the front derailleur

• Smooth, controlled braking with reduced noise and fade

• Minimal cockpit clutter thanks to wireless operation

• Built for racers and performance-driven road cyclists