Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures. 

Features:

- GRX hydraulic disc brake STI's give you control, modulation and power with minimal effort in all riding conditions
- Raised hood head prevents hand misalignment and slippage
- Anti-slip texture and brake lever coating gives higher braking efficiency and reduces -fatigue on long rides
- Weight: 306g

Product specifications:
- MODEL NO: ST-RX810
- SERIES: GRX 11-speed
- Color: Series color
- Average weight: 286
- Bracket cover color: Standard
- Shifter type: DUAL CONTROL LEVER
- Shift lever:

- Compatible rear derailleur type: Road 11-speed
- Brake lever:
- Brake hose (kit): SM-BH90-JK-SSR
- Hose joint: Straight
- Brake hose color (kit): Black
- Recommended brake caliper: BR-RX810
- Oil: SHIMANO Mineral
- Reach adjust
- Funnel bleeding
- Free stroke adjust
- SERVO WAVE
- Clamp band:
- Diameter (mm): 23.8-24.2

- Shifter lever body:
- Release: Resin & Steel
- Shift lever cable:
- Outer casing (Lever side): OT-SP41
- Outer casing (Rear derailleur side): OT-RS900

- Inner cable: Polymer-coated cable

Caliper specification:

MODEL NO: BR-RX810
- SERIES: GRX 11-speed
- Color: Series color
- Average weight: 141
- Remarks: Front spec with adaptor
- Brake type: Hydraulic disc brake
- Brake hose (kit): SM-BH90-JK-SSR, SM-BH90-J-SSR
- Hose joint: Straight
- Brake hose color (kit): Black
- J-Kit spec (for OEM): 
- ICE TECHNOLOGIES pad compatible caliper: 
- Pad: L05A-RF Resin (w/ fin)

- Recommended brake lever:
  ST-RX810
  BL-RX810
  ST-RX815
- Recommended disc brake rotor:
  SM-RT800
  RT-MT800
- Oil: SHIMANO mineral
- ONE WAY BLEEDING: 
- Mount type: Flat mount
- Piston: 2
- Caliper fixing screw:
  Tool size: 4 mm
  Anti-loosen method: Screw fix pin+Snap ring
- Pad mount: Pad axle

The kit contains a bled brake/shifter, flat mount brake caliper with pads, hose, and mineral oil, but excludes the rotor and adapter.

Left shifter is 2-speed, right shifter is 11-speed

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.