BMW 3 Series (E21) Tie Bars
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The BMW 3 Series (E21) lower tie reduces the non-pivoting movement of the BMW 3 Series (E21) control arms and makes the subframe stiffer. This lessens the distortion of the BMW 3 Series (E21) lower suspension, which is useful during hard cornering. In general it, it improves the handling and control of the vehicle.