Product Details

The Shimano GRX disc brake for gravel use combines the BR-RX820 brake caliper with the ST-RX820 shift/brake lever. This enables smooth, crisp shifting for 2x12 or 1x12-speed systems.

The lever and lever body ergonomics have been specially adapted for the intended application and for flared handlebars. The design takes pressure off the palm for increased comfort. The aluminium lever has a textured coating to prevent slipping and the reach of the lever can be adjusted with the help of a hex key. The pad engagement point is also adjustable. You also benefit from Shimano Servo Wave technology for a more targeted application and a more efficient use of braking power.

The flat-mount brake calipers provide excellent brake control, improved modulation and faster conversion of inputs. It is built more compact than its predecessor and has 10% more space for the brake pads, which reduces noise. The caliper is made of lightweight aluminium, has two brake pistons made of synthetic resin and a straight hose connection. The brake is supplied with a shift cable, cable housing, brake hose and organic pads with Ice-Tech cooling fins for heat dissipation. Of course, it is also compatible with sintered pads and can be combined with brake rotors from 140 to 180mm (adapters may be required)

• Lever:
  • Mechanical-hydraulic shift/brake lever (2x or 1x 12-speed) for gravel use
  • Smooth and defined shifting
  • Great brake control on mixed terrain
  • Gravel-specific lever and lever body ergonomics
  • Reach adjustment (10.9 mm) with 2 mm hex tool
  • Shift cable with polymer coating for low friction
  • Faster brake contact thanks to Servo Wave
  • Anti-slip brake lever
  • Bracket optimised for flared handlebars
  • Mineral oil
  • Hose: 1000mm front, 1700mm rear
  • Compatibility:
    • Front Derailleur: FD-RX820, FD-R7100
    • Crank: FC-RX820, FC-RX610, FC-R9200, FC-R8100
    • Rear Derailleur: RD-RX820, RD-RX822, RD-R7100
    • Cassette: CS-R8101, CS-R7101, CS-HG710, CS-M9101, CS-M9100, CS-M8100, CS-M7100, CS-M6100
    • Chain: CN-M8100, CN-M9100, CN-M7100, CN-M6100
• Caliper
  • Hydraulic disc brake caliper with flat-mount design for gravel use
  • More control through better modulation
  • Faster initiation of the braking process
  • Less noise thanks to 10% larger brake pad spacing
  • More compact than predecessor model
  • Simple 1-way bleeding process
  • 2 pistons made of synthetic resin
  • Brake adapter for front 140/160 + 160/180 mm (only for front)
• Weight: Front 429g, Rear 425g

About Shimano
Established in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.