2388 - Planetary gear differential (complete)
8296 - Transmission gears, single speed, metal
5593X - Single speed conversion kit (eliminates the 2-speed, makes Jato race legal).
5040 - Oil, differential (20M weight) (standard)
3992 - Input shaft/ drive gear assembly (18-tooth steel top gear)
2388X - Planetary gear differential with steel ring gear (complete) (fits Bandit, Stampede, Rustler)