GRX’s redesigned ST-RX610 Levers w BR-RX400 Hydro Calipers feature textured hoods and an anti-slip brake lever coating that bolsters control on rugged terrain. Shimano have updated its 600-series cranks and shift levers for 1×12 and 2×12 setups that utilize trickle-down technology from the original 800 series GRX component line. Adding 12-speed shifting without any additional lever bulk the RX610 series shifters are designed for all-day comfort when using flared drop bars a gravel cycling staple. By reducing pressure points and increasing surface area your hands will feel less fatigued and you’ll be better in control as you test your limits.