ROSE Bikes GRX BL-RX820 Brake Lever for Single x 12-Speed with BR-RX820 Disc Brake (Left)| Shift And Brake Lever Sets|Shifters

United in Gravel!
With a clear focus on the heart and soul of gravel biking, SHIMANO’s mechanical GRX series now gets a 12-speed update to deliver top performance!
Simplicity and reliability build the basis for the new 12-speed GRX line-up and allow you to enjoy off-road adventures of a special kind!

The left GRX BL-RX820 brake lever for easy single x 12-speed drivetrain configuration comes without a shifting function and offers maximum control and outstanding braking performance on rough terrain thanks to gravel-dedicated ergonomics.
The curved lever shape and the non-slip textures on the grip surfaces ensure optimum grip on rough gravel roads or during tough cyclocross use. Yet, the GRX levers also impress with high comfort and reliability on bike-packing adventures with lots of luggage and on daily commutes to work.

In combination with a powerful hydraulic BR-RX820 Flatmount disc brake, SHIMANO offers you a braking system with great braking performance and comfortable braking power modulation thanks to the SERVO-WAVE technology.
This provides high safety when riding your gravel bike in bad weather. A wide lever reach adjustment range tops off the package.

Details:
Gravel-specific ergonomics of brake lever and brake handle
SERVO-WAVE technology for maximum braking performance and outstanding braking power modulation
ONE WAY BLEEDING for quick and easy bleeding
FREE STROKE ADJUST bite point adjustment
Constantly high braking power, even in bad weather
J-KIT DIRECT version (see note!)

Technical details:
Intended use: Gravel, Road, Cyclocross
Compatibility: 12-speed / single
Material: aluminium, composite
Brake lever: BL-RX820-L (front wheel: left lever / WITHOUT shifting function!)
Brake calliper: BR-RX820 (Flatmount, 2-piston system (resin), flat design)
Brake hose: SM-BH90-JK-SSR
Brake fluid: SHIMANO mineral oil
Adjustable free stroke: yes
Lever reach adjustment integrated (with tool)
Hose length: 1000 mm (front wheel)
Brake pads: L05A-RF (with cooling fins), organic
Weight brake lever: 222 g (piece)
Weight brake calliper: approx. 146 g (piece)

In the box:
1 SHIMANO GRX BL-RX820 brake lever (front wheel, left, WITHOUT shifting function for single x 12-speed)
1 SHIMANO GRX BR-RX820 Flatmount brake calliper (incl. 1 set of brake pads and adapter for 160 mm brake disc)
1 SHIMANO SM-BH90 brake hose (1000 mm)
Filled and bled ready for installation.

Tip:
For the recommended SHIMANO RT-CL800 ULTEGRA Centerlock brake discs see product code:
SHIMANO ULTEGRA RT-CL800 brake disc incl. lockring (internally splined) (prod. code: 2332828)
SHIMANO ULTEGRA RT-CL800 brake disc incl. lockring (externally splined) (prod. code: 2332826)

For the left and right shift/brake lever with shifting function see product code:
SHIMANO GRX ST-RX820 brake/shift lever combination double x 12-speed with BR-RX820 disc brake (front or rear) (prod. code: 2346094)  

Note:
J-KIT DIRECT version: Filled ready for mounting and bled for easy cutting and routing of the hose. Olive pre-installed in brake lever, insert pin in hose. If you want to cut the hose, make sure to insert a new insert pin.