The XRAY 305395 ECS BB SC drive shaft pin features exact 2.0x8.4mm sizing and a hand-ground finish to improve drivetrain reliability. This component is a direct-fit option for users of the X4 ALU FLEX and X4 GRAFIT 2024 chassis who want repeatable fitment.
Each pin is individually hand-ground to meet tight tolerances, ensuring a secure seating in the ECS BB SC drive shaft. The careful finishing reduces slop and supports smoother rotation during fast running or competitive racing.
Specifically intended for the X4 ALU FLEX and X4 GRAFIT 2024 models, this drive shaft pin integrates cleanly with the stock drive assembly. It is suited to racers and serious hobbyists looking for dependable hardware that stands up to frequent use.
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