Shimano GRX RX820 Flat Mount 2x12-Speed Shifters

Shimano GRX shift/brake kit comprising the ST-RX820 Dual Control lever for confident handling and the BR-RX820 hydraulic disc brake calliper for consistent braking performance. The proven bleed system One Way Bleeding and Easy Hose Joint System, which makes brake hose replacement easier, ensure simple, straightforward maintenance.

Shimano GRX ST-RX820 brake/shift lever

A wide Flare is a typical feature of modern gravel handlebars. The ergonomics of the GRX ST-RX820 brake/shift lever have been optimised and specifically adapted to flared handlebars. While the grip design reduces pressure on the palm, the textured, non-slip surface of the brake lever improves handling on uneven terrain. A small cockpit innovation for maximum comfort and control. With these features, the ergonomic brake/shift lever is ideally suited to long-distance riding or multi-day tours on mixed terrain.

The STI lever offers maximum comfort as well as smooth, precise and highly responsive shifting across the entire gear range. The proven SERVO WAVE technology also ensures particularly good control when decelerating. Adjustable lever reach (Reach) and bite point (Free Stroke).

Shimano GRX BR-RX820 disc brake calliper

The GRX BR-RX820 hydraulic calliper delivers superior braking power on challenging terrain. Improved modulation and a quicker bite point give gravel riders a completely new sense of control. In addition, the Flatmount disc brake calliper is quieter and easier to maintain than ever, despite its flatter design. The 10 % increase in brake pad clearance reduces noise, while the proven bleed system One Way Bleeding makes maintenance easier.

Dual Control Lever (DCL) |

Dual Control Lever (DCL) | The Shimano DCL levers combine braking and shifting functions in a single control unit for easy, comfortable operation. Their innovative ergonomics are even more important than adding further gears when it comes to raising performance standards. The highlight of the STI (Shimano Total Integration) controls, however, is the ability to shift both front and rear gears with a single finger. Dual Control levers achieve this through extremely precise, smooth operation and the same stability for which Shimano's MTB technologies are already known.

SERVO WAVE | As the brake lever takes up a large amount of travel at the start of its movement, the brake pads contact the brake rotor more quickly, leaving more lever travel available to modulate braking force. As a result, SERVOWAVE braking systems feature a faster response, higher performance and shorter free travel.

J-Kit (Easy Hose Joint System) | In braking systems with a J-Kit brake hose connection, the brake lever has an integrated seal (olive), which makes the brake hose easier to install and remove.

Ice Technologies | To maintain consistently high braking performance during prolonged, uninterrupted use, Shimano developed Ice-Tech cooling technology for brake rotors and pads. Brake pads with Ice Technologies have aluminium cooling fins that dissipate heat more effectively. Combined with the brake rotor's optimised heat radiation characteristics, this extends pad life while minimising noise and brake fade.

FEATURES

- Greater comfort and control on mixed terrain
- Gravel-specific hood and brake lever ergonomics
- Non-slip coating on the brake lever surface
- Optimised shape for flared handlebars
- Brake pad clearance increased by 10% reduces brake noise
- Low-maintenance bleed procedure

SPECIFICATIONS

- Use: Gravel
- Series: GRX RX820
- Speed: 1x12
- Control type: Mechanical (Dual Control)
- Lever material: Aluminium
- Brake type: Hydraulic
- Calliper mounting: Flat Mount
- Calliper pistons: 2
- Piston material: Resin
- Calliper material: Aluminium
- Pads: L05A resin pads with cooling fin (included)
- Hydraulic fluid: Mineral oil
- Hydraulic hoses: SM-BH90-JK-SSR
- Hose length (front / rear): 1000 / 1700 mm
- Weight (manufacturer, single kit): 510 g

CONTROL POSITION / BRAKE / SPEED

- Left / Front / 1-speed
- Right / Rear / 12-speed

160 mm front Flat Mount adapter and gear cable included. System pre-assembled in J-Kit configuration.


GRIP SU ROUGH TERRAIN
The non-slip surface of the GRX hood ensures consistent control, even on the roughest descents.

NON MISS MAI UN BRAKING BITE POINT DI
The non-slip coating on the GRX brake levers always ensures Shimano's legendary stopping power, even in wet or muddy conditions.

HOOD SHAPE DEL OPTIMISED PER FLARED HANDLEBARS
With its rounded profile, the new GRX RX820 hood shape distributes pressure across a larger area of the hand, maximising comfort on long rides.

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.