SHIMANO GRX disc brake set shifting | Brake lever ST-RX610 + BR-RX400 Flat Mount left | 2-fold
With the GRX, Shimano brought the first gravel-specific groupset onto the market. Since then, the range of uses and range of gravel bikes has expanded significantly. Shimano has taken this development into account by expanding the range of the GRX group. With now 12 sprockets on the rear wheel and the option to choose between a 1-speed and 2-speed setup, you can adapt your drive even better to your needs.
Just like its big sister RX820, the GRX RX 610 shift brake levers also have a grip geometry and surface texture that is specially optimized for gravel use. The upper hump has been raised so that you can't slip forward on rough surfaces. A recessed thumb recess ensures a firm grip at all times on difficult terrain. And so that your hands don't slide back and forth even when riding in the rain, a non-slip material was chosen, which also has good cushioning properties and thus increases comfort.
As usual, the dual-control lever of the GRX series offers excellent ergonomics. The crisp switching operations can be carried out quickly, precisely and with little effort. This means you never lose control of your bike, even in hectic situations.
The brake lever was also designed so that you can stop quickly at any time from any grip position. It is slightly bent outwards and the axle of the lever has been moved upwards. This means the ergonomics are improved and at the same time the necessary hand strength is reduced. In addition, the grip width of the brake lever can be individually adjusted so that even bikers with smaller hands can ride safely.
The flat-mount brake caliper improves braking performance and controllability under all conditions. Maintenance work, such as bleeding or changing the lining, can also be carried out easily. The L03A brake pads with cooling fins help keep braking temperatures low, especially on long mountain pass descents.
With this lever and brake caliper combination you are just as comfortable and safe as with the RX820 components. By dispensing with servo wave technology and choosing a slightly simpler material, you get it at an excellent price-performance ratio.
Technical data:
Shift/brake lever material: aluminum, plastic
Technology: Reach Adjust, Dual Control
Gears: 2-fold (for 2x12 drives)
Reach width adjustment: integrated (with tool)
Brake caliper material: aluminum
Brake medium: mineral oil
Piston: 2
Mounting: Flat Mount
Screw length: n/a
Recommended brake discs: Shimano SM-RT64
Brake pads: L03A resin with cooling fins
Length of brake line: approx. 1000 mm (for front wheel brake)
Color: matt black
Weight according to manufacturer: kA
Weight weighed: 476g (STI and brake caliper including filled hydraulic line)
Scope of delivery:
1x shift/brake lever including outer cover and shift cable
1x Flat Mount brake caliper incl. L03A resin brake pad
filled hydraulic lines