Molded composite engine gear box created from premium composite material accommodates 3 gears. The graphite molded gear package is lighter and more powerful, with a narrower design to suit the narrower suspension holders, decreasing roll while increasing traction. All parts fit together completely, and provide super-easy usage of the rear differential. The durable gear field homes the differential and back transmission, enabling the mounting of back roll center owner, engine dish, and rear shock tower.