Shimano 105 ST-R7120-L Left Shift/Brake Lever 12-Speed

The Shimano 105 ST-R7120-L is a left shift/brake lever from the 105 R7100 series, designed for 2x12-speed mechanical road systems with hydraulic disc brakes.

It features Shimano’s Dual Control Lever (DCL) design, integrating shifting and braking into one ergonomic unit for full control without removing hands from the handlebars.

The updated lever body shape is based on extensive ergonomic research, improving reach and comfort for a wide range of hand sizes.

Key features

• Shimano 105 R7120 left lever
• Dual Control Lever (shift + brake)
• Compatible with 2x12-speed road systems
• Hydraulic disc brake integration
• Improved ergonomic design
• Reach adjust system
• Smooth and intuitive shifting

Ergonomics and control

The revised lever shape reduces reach distance, improving comfort and control during both shifting and braking.

Reach adjustment allows fine tuning for different hand sizes and riding preferences.

On-bike performance

The Shimano internal mechanism ensures light and precise shifting for better riding efficiency and control in all conditions.

The hydraulic braking system provides strong, consistent and highly controllable braking performance.

Compatibility

• Shimano 2x12-speed road drivetrains
• Shimano hydraulic disc brake systems
• Modern road bikes

Technical specifications

• Brand: Shimano
• Series: 105 R7120
• Model: ST-R7120-L
• Side: left
• Type: Dual Control Lever
• Speeds: 2x12
• Brake type: hydraulic disc
• Reach adjust: yes

Why choose it

• Modern ergonomic design
• Reliable Shimano 105 shifting
• Strong and consistent braking
• Ideal for current 2x12 road setups
• Perfect OEM replacement or upgrade