Shimano DURA-ACE Di2 ST-R9270 + BR-R9270 12-Speed Disc Brake (Rear)

Engineered for ultimate speed and control, the Shimano DURA-ACE Di2 ST-R9270 + BR-R9270 delivers lightning-fast wireless shifting and powerful braking in a sleek, minimalist design. Equipped with SERVO WAVE technology and a new monobloc caliper, it offers exceptional modulation, wider pad clearance, and quieter operation—all optimized for high-performance road cycling.

🔧 Highlights

• Wireless Di2 shifting: Clean cockpit, ultra-fast response, and low energy consumption

• DUAL CONTROL lever: Ergonomic, lightweight carbon construction

• Hydraulic disc brake: Quiet, powerful, and easy to maintain

• Personalized setup via Shimano E-TUBE app

⚙️ Key Features

• Shifter: ST-R9270-R, 12-speed, right-hand dual control

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

• Brake Pads: L03A resin with cooling fins

• Hose: SM-BH90-JK-SSR (1700mm, shortable)

• Reach Adjust: Yes

• Bleeding System: One-Way, clean and simple

• Brake Fluid: Shimano mineral oil

• Wireless Chip: Di2 proprietary, secure and efficient

• App Compatibility: Fully E-TUBE Project ready (via EW-SD300 wires)

• Material:

  • Lever: Carbon (painted)

  • Body: CFRP

  • Caliper: Aluminium

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

⚡ Performance Benefits

• Fastest shifting Shimano has ever delivered

• Superior brake modulation with reduced noise

• Seamless setup, adjustment, and diagnostics via E-TUBE

• Lightweight and aerodynamic for competitive road use