The XRAY 303183-M rear lower arm for the X4 series is a direct upgrade for drivers wanting more predictable suspension behavior. Built with Carbon Fiber Fusion (CFF), this medium-hardness arm balances controlled flex with dependable durability.
CFF construction lets the arm flex where needed, spreading loads evenly to boost mechanical traction and sharpen response. That tuned flex helps the car stick through mid-corner transitions on asphalt.
With medium hardness, this arm gives more compliance than stiffer parts, making it easier to manage grip and steering in warm track conditions. It offers a forgiving feel without sacrificing control.
This rear lower arm is made specifically for the left side of X4 series cars, ensuring an exact fit and consistent geometry for reliable handling.
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