Shimano GRX Di2 ST-RX815 Hydraulic 11-speed right-hand shifter with 1700mm Flat Mount brake caliper

The Shimano GRX groupset stands out from the competition thanks to its components featuring ergonomics specifically designed for gravel riding, its optimised gear-changing options, its robust reliability and its quiet, stable drivetrain.

This is not a reworked version of road components, but rather a groupset with components tailored to the specific demands of gravel riding.

The Shimano GRX Di2 Dual Control lever provides smooth and responsive gear changes for rides on mixed terrain, road or gravel. The lever’s ergonomic design enhances comfort, whilst the textured, non-slip brake lever increases control on bumpy terrain.

The Di2 version offers digital precision shifting as well as Shimano’s Synchro-Shift system (synchronised gear changes) with customisable settings.

The brake caliper features excellent heat dissipation with convenient access to adjustments. Bleeding is quick and easy, as is wheel changes, thanks in part to its Flat-Mount mounting system.

Features:

- Shimano part number: IRX815DRRDSC170
- Shimano part numbers: ST-RX815/BR-RX810
- Shimano range: GRX RX817
- Flat-Mount brake caliper mounting type
- Colour: Colour series
- Number of gears: 11-speed
- Included: right lever, rear brake caliper, pads fitted (disc not included)