SHIMANO GRX ST-RX820 2-SPEED STI DUAL CONTROL LEFT

The Shimano GRX ST-RX820 2-speed STI delivers the braking power gravel riders demand.

Engineered for hydraulic disc brakes, this dual control lever provides excellent deceleration performance when you need it most—whether tackling steep descents, technical terrain, or unexpected obstacles. The reliable power reserves keep you in control on every ride, giving you the confidence to push harder on challenging routes. Built for gravel's unpredictable demands.

Features 

• Greater mixed-terrain control
• Gravel inspired lever and bracket ergonomics
• Anti-slip brake lever
• Same light shifting operation as top tier road systems

Specification

• Use: Gravel, Cyclocross
• Group: GRX
• Model: ST-RX820-L
• Type: Dual-Control (STI)
• Handlebar mounting: left
• Gear front: 2-speed
• Optical gear display: No
• Lever reach adjust: Yes, with tool
• Handlebar diameter: 23.8mm/24.2mm
• Brake-type: Hydraulic Disc Brake
• Cable connection: Straight
• Recommended brake hose: SM-BH90-JK-SS
• Recommended brake caliper: BR-RX820
• Recommended brake rotor: SM-RT800 / SM-RT70 / SM-RT64

Material

• Lever: Aluminium

Colour

• Series colour

Weight

• Approx. 287g 

Contents

• 1 x GRX ST-RX820 2-speed STI Dual Control left for Hydraulic Disc Brake
• 1 x Gear wire (Optislick)
• 1 x End caps