This to invention relates to the I Brother arm of the vehicle suspension, in the prior art, I Brother cancer, so the central axis of the body portion coupling the shaft and I Brother arm is perpendicular to the assembly tool is to interfere with the body of the I Brother cancer that that assembly is inconvenient there is a problem, in this case, when forming the I-axis and the center body portion of the coupling arm Brother axis is inclined to the axis combination angle is the opposite direction to be mounted on left and right yangryun will there is a problem that must produce a separate I Brother cancer.; The present design is coking of the ball on the coupling shaft, but forms the I Brother arm having an inclined center axis 14 toward the front of the vehicle from the 12, knuckle portion 16 of the body portion 10, as shown in Figure 2 is one that I Brother arm 18 of the right ryuncheuk is king Koh upward, I Brother arm 20 of the left ryuncheuk is sharer is king Koh downward left ryuncheuk I Brother arm 20 without separate production.
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