Shimano GRX Di2 Shifters with Flat Mount Calipers (ST-RX815 + BR-RX810) C-class the rear one also exploits

the rear one also exploits many developments achieved for its mechanical 12-gear predecessor

The symmetrical design of the inner chainring teeth allows improved stability with chain crossovers

Crank Spindle Diameter: 24mm

2mm stainless steel tubing bent in the same graceful curves as our original model

Refresh your drivetrain with the genuine SRAM RED AXS 12 Speed Chainrings (2x) - a direct mount chainring set built for RED AXS cranks

Shimano GRX Di2 Shifters with Flat Mount Calipers (ST-RX815 + BR-RX810) C-class the rear one also exploitsThe Shimano GRX Di2 Dual Control Lever delivers light and responsive shifting for mixed terrain riding. The ergonomic shifter design improves comfort, and the textured, anti slip brake lever increases control on bumpy terrain. This Di2 version, the ST RX815 Shifters with BR RX810 Flat Mount Calipers, offers the digital precision of Shimano electronic shifting and synchronized shifting. Specifications Raised hood head prevents hand misalignment and