This 39mm double-section CVD is a 1/10-scale drivetrain replacement intended for TAMIYA platforms, supplied as an aftermarket part by GPM (XV2039SC). Machined from 4140 carbon steel, the assembly is designed to provide a compact two-piece constant-velocity coupling that maintains torque transfer under typical RC loads. The kit supports smoother rotation compared with worn stock dog bones when fitted correctly.
Package contents include two double-section CVDs and two M4 lock nuts, and the parts are listed as 2 pcs per item. The components are nominally finished for fitment into the outer drive cups used on the XV-02 and XV01 series; confirm axle length and joint travel before final installation. The original factory kit was offered as a 37mm variant, and the supplier recommends matching these 39mm CVDs with 39mm dog bones for full travel compatibility.
For chassis tuning, use these CVDs when you need a steel, two-section joint to replace fatigued dog-bone driveline parts; verify fit with the drive cups and secure the supplied M4 lock nuts to maintain preload. This part serves as a direct drivetrain component for the specified TAMIYA platforms rather than a general-purpose universal joint.
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