Designed to match the Shimano GRX RX815 Di2 groupset, the GRX RX815 Di2 11-Speed STI Shift Levers & RX810 Calipers provide slick shifting and powerful braking in a sleek, stylish package that is perfect for your gravel or adventure bike.Gravel inspired lever and hood ergonomics for exceptional performance and comfortAnti-slip brake lever improves control in all conditionsProvides smooth, fast and light-action shifting performanceOversized 22mm pistons optimised for heat insulation, lightweight & stiffnessIncreased pad to rotor clearance & inline hose routing for low profile designThe GRX RX815 levers get the look and feel of their 11-speed road orientated levers, while adapting the hoods and levers to provide exceptional performance off the beaten track. As well as the specially designed hood shape to improve grip in wet and muddy conditions, the shifters use the same proven Di2 internals as others in the Shimano to provide incredible shifting performance. The lever is fully adjustable