XRAY precision molded 59 spur gear (1st gear) made from special composite material which gives the spur gear an optimum balance of hardness, toughness, and flexibility thus providing long life, minimal wear, and minimizing breakage or teeth stripping. The spur gear remain strategically lightened to reduce rotating mass. The special composite material will withstand even the most extreme racing conditions which imparts high tension on the spur gears.