Engineered for XRAY X4 cars, the XRAY 302666 composite ball joint set contains two front and two rear joints made to mate with 4.9mm ball connectors. They help preserve precise suspension movement and reduce unwanted slop.
The XRAY 302666 items are manufactured to align with X4 upper arm mounts. The front ball joints incorporate a hole for body post screws so the connection stays firm under braking and cornering loads.
Ensure each joint is fully seated on its 4.9mm ball and check for lateral play after installation. Regular replacement of worn joints keeps steering predictable and supports consistent lap times.
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