Shimano GRX ST-RX815 2 x 11-Speed Di2 Left Drop-Bar Shifter/Hydraulic Brake Lever BR-RX810 Flat Mount Caliper Pre-Bled 1000mm Hose MPFN-FD40141-10 Available in various widths

Available in various widths

Compound Organic Heat Sink No Backing Plate Material Steel Pad Shape Number 58

} Includes stiffer springs

Decreased rear derailleur tension at low gear positions prevents high chain tension

5" 170 mm 15 x 110 mm 44 mm Offset Black

Shimano GRX ST-RX815 2 x 11-Speed Di2 Left Drop-Bar Shifter/Hydraulic Brake Lever BR-RX810 Flat Mount Caliper Pre-Bled 1000mm Hose MPFN-FD40141-10 Available in various widthsShimano GRX ST RX815 2 x 11 Speed Di2 Left Drop Bar Shifter Hydraulic Brake Lever with BR RX810 Flat Mount Caliper Pre Bled 1000mm Hose. GRX ST RX815 Di2 Shifter Hydraulic Brake LeverA raised hood head prevents hand misalignment and slippage while a recessed finger notch prevents upward slipping Anti slip texture and brake lever coating Higher brake lever axis and curved lever allow for higher braking efficiency to reduce fatigue on long rides Tooled