- motors
green, 16,000 rpm motor
yellow, 23,500 rpm motor
orange, 28,000 rpm motor - motor clip
- transfer gears
blue, transfer gear, 18 / 6 teeth
green, transfer gear, 18 / 7 teeth
red, transfer gear, 18 / 8 teeth - geared rear axles
blue gear rear axle, 24 teeth
green gear rear axle, 23 teeth
red gear rear axle, 22 teeth