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Abstract Spike is the main weapon used in volleyball games. The purpose of this research was to determine the contribution of angle knee joint and angular knee flexion to ball speed. This research used a descriptive correlational method and purposive sampling technique. Samples of this study were 10 female volleyball athletes. The instrument used in this study was based on 2-dimensional analysis using kinovea software and radar speed gun to determine the speed of the ball. data analysis was processed using SPSS software version 23. From the results of data analysis there was a significant contribution between maximal speed shoulder to maximal shoulder abduction with a contribution value of 0.79 and sig 0.009 <0.01, and there was a significant contribution between maximal shoulder hyperekstention to maximal shoulder abduction with a contribution value of 0.80 and sig.0,008 <0.01.