Shimano GRX RX400 2x10-Speed Right-Hand Hydraulic Disc Brake/Shift Lever

The Shimano GRX ST-RX400 right brake/shift lever is designed for gravel and cyclocross bikes with a 10-speed drivetrain. It combines rear shifting and hydraulic disc braking in a single lever.

• Shift and brake with a single lever, a right lever for 10-speed rear shifting
• Hydraulic disc braking: more control on descents and off-road too
• Lightweight, weighing 306 g for the single right lever
• Fits handlebars with a diameter of 23.8 / 24.2 mm
• Use a BR-RX400 calliper and SM-RT70 or SM-RT64 rotors to complete the system

Technical specifications

• Model: ST-RX400 (right lever)
• Speed: 10 (rear derailleur)
• Brake type: Hydraulic disc
• Weight: 306 g
• Handlebar diameter (clamp): 23.8 / 24.2 mm
• Recommended calliper: BR-RX400
• Recommended brake hose: SM-BH90-JK-SSR / SM-BH90-J-SSR
• Recommended rotor: SM-RT70 / SM-RT64

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.