Molded composite motor gear package made from specially-formulated graphite composite product to match BACK and FRONT engine position of XB2. The graphite molded gear box is lighter and more effective. All components fit completely together, as well as the super-easy utilization of the trunk differential is going to be appreciated by every racer. The durable gear package homes the differential and back transmission, allows the mounting of back roll center owner, engine dish, and back shock tower. Fits simply XB220