These pinions are suitable for regular 18k Mabuchi-S motors as well as Sport+ SP blue, orange and yellow motors or any other motor with a .078" shaft. more info

Five contrate gears with differing numbers of teeth from 25 to 29. The contrate gears are designed specifically for the Sport+ 3mm axle. more info

Includes 1 each of the following lengths: 45, 47.5, 50, 52.5, and 55mm. These axles and C8407 axle bushings are required when using C8404 crown gears or C8405 spur gears. more info