Product Description Specifications Documentation P8 Motor HW Kit to mount an unmodified FIRST CIM motor with an 8mm shaft and a 2mm key to a P8 gearbox with a first stage of 4:1.This kit contains a pinion, spacer and screws. This kit does not contain a motor input block. For Motor: FIRST CIM Pinion: P8 Pinion, First Stage 4:1, 8mm Shaft, Slip, 2mm key, CIM CIM Hardware: Two #10-32 x 1/2 screws Key: 2mm x 14mm square Other Hardware: Pinion Spacer Click arrow in center of image to load and interact with it Your browser does not support iframes.