SHIMANO GRX Disc Brake Shift | ST-RX600 brake lever + BR-RX400 flat mount disc brake
Gravel bikes are becoming increasingly popular among cyclists. The advantages are apparent. They have a more comfortable geometry than racing bikes, are also excellent to ride off the beaten track and are suitable for longer journeys. However, conventional racing bike components have reached their limits with these bikes. That's why Shimano has developed its own shifting groups especially for this type of bike.
The GRX ST-RX600 shift/brake levers have the same grip geometry, optimized for Gravel bikes, as the GRX ST-RX810 lever units. Compared to the high-end shift/brake levers, the weight is slightly higher and the Servo Wave technology is not on board.
Their upper humps have been raised so that you cannot slip forward on rough ground. A recess for the thumb ensures a firm grip in difficult terrain at all times. And so that your hands don't slide back and forth when driving in the rain, a non-slip material was chosen, which also has good damping properties and thus increases comfort. As usual, the dual-control lever offers outstanding ergonomics. The crisp switching operations are short, precise and can be carried out with little finger strength. This means that you never lose control of your bike, even in hectic situations. The brake lever has also been designed in such a way that it can be stopped quickly at any time from any gripping position. It is slightly bent inwards and the axle of the lever has been moved up. This improves ergonomics and at the same time reduces the manual effort required. In addition, the reach of the brake lever can be individually adjusted so that bikers with smaller hands can also ride safely.
The BR-RX400 flat-mount brake caliper improves braking performance and controllability in all conditions. Maintenance work, such as venting or changing the pads, can also be carried out easily. The L03A brake pads with cooling fins help to keep the brake temperatures low, especially on long downhill runs.
Technical specifications:
Material shift/brake lever: aluminium, plastic
Technology: Dual Control, Reach Adjust
Gears: 1x11 or 2x11
Reach adjustment: integrated (with tool)
Material caliper: aluminum
Brake medium: mineral oil
Mounting: flat mount
Screw length: not specified
recommended brake discs: Shimano SM-RT64
Brake Pads: L03A Resin with cooling fins
Brake line length: approx. 1000 mm (front)
Color: Black
Weight according to the manufacturer: brake lever only - 227g, shift/brake lever - 307g, brake caliper - not specified
Weight weighed: left brake lever + brake caliper including filled brake line - 415g
Scope of delivery:
1x shift/brake lever depending on the variant including outer casing and shift cable
1x Flat Mount brake caliper incl. L03A Resin brake pad
filled hydraulic lines
