Shimano 105 5800 2x11 speed sti shifter setlike the st 5800 shifter the lever offers 10mm of reach adjustment for riders with small hands and can be used with three of shimanos mechanical groupsets each of which utilise an 11 speed drivetrain dura ace 9000 ultegra 6800 and the new 105 5800 featuresslim ergonomically designed 11 speed 105 dual control leversergonomic short shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changesbr