Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4” lower and 1 1/8” upper for road, 1 1/2” lower and 1 1/8” upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.
捷安特第一代的加大车首强化设计,为提供精准的车首操控性能而设计,综合了OVERDRIVE系统的加大头碗组(公路车下为1 1/4"上为1 1/8",登山车下为1 1/2"上为1 1/8")与锥形前叉转向管,提供绝佳的操控刚性