Specifically for XRAY X4 models, the XRAY 302666 composite ball joint kit provides two front and two rear items designed for 4.9mm ball connectors. The construction focuses on reliable pivot action under typical club and track use.
The XRAY 302666 joints match the front and rear upper arm locations on the X4. Front units include a hole for body post screws to secure the joint and maintain consistent suspension behaviour in corners.
Regularly check the seating of each ball joint and replace if any play develops. Properly tightened joints keep steering crisp and reduce the chance of uneven tyre wear during sessions.
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