A motorcycle drive chain is an important product that transfers engine power to the rear wheel of a motorcycle. It has a strong image of being a disposable part that must be replaced after wearing out through repeated rotation. In terms of performance, reducing the weight of this product can be seen to improve motorcycle maneuverability. While until now it has been impossible to both reduce weight and increase strength at the same time, this design has succeeded in developing an optimally designed form by increasing strength without adding weight, through development and practical use of a precision cold-forging process never before seen. In addition, this design form also increases product recognition among users, thanks to its functional beauty.